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Quiz: These tricky maths problems are very difficult to solve
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Maths either strikes deep fear into people or it’s just part and parcel of their everyday day lives.
On days like World Maths Day, this means you’re either reminiscing at a time when you had to battle with quadratics or feeling quietly smug with your mathematical abilities.
Whatever your ability, it’s time to put those skills to the test. We’ve put together some of the hardest problems we could find across the web.
Can you solve them all?
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Can You Solve the World’s Trickiest Math Problems?
A ll questions courtesy Alex Bellos, author of The Grapes of Math: How Life Reflects Numbers and Numbers Reflect Life .
Correction appended Aug. 14, 6:35 p.m.
The original version of this quiz misstated a figure in question two.
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The Hardest Math Quiz
Fancy yourself as a maths whizz have a go at this mega-tricky quiz.
How many minutes are in half of a day?
How many angles are in a triangle?
Whats 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9?
What's the square root of 16?
Which number is closest to 1200.
If it's 10.15 now, and the bus arrives at 11.10, how many minutes do you have to wait for the bus?
How many sides are on a hexagon.
Complete the sum:24 + ___ = 50
Which of these words has something to do with circles?
How many 8's can you fit in 62.
Oh no! Nothing to see here! Try another quiz?
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Impressive! You know your maths!
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115+ Fun, Tricky Math Trivia Questions & Answers
Math trivia questions will put your knowledge to the test. You learned all about numbers when you were young, but how much do you remember now that you’re older? If you want to challenge yourself and learn something new in the process, check out the math trivia questions below. You can even make a game out of it and quiz your children, friends, or students:
Math Trivia Questions About The History Of Numbers
Trivia Question: What number sequence often appears in nature and was discovered in 1202 AD? Answer: The Fibonacci Sequence often appears in nature.
Trivia Question: Who invented paint by number? Answer: Leonardo Da Vinci invented paint by number.
Trivia Question: When was the equal sign invented? Answer: Robert Recorde invented the equal sign in 1557.
Trivia Question: What civilization first used dot patterns to represent numbers? Answer: The Chinese first used dot patterns to represent numbers.
Trivia Question: How old was Isaac Newton when he developed integral calculus? Answer: He was 23 years old.
Trivia Question: Who is the fastest human calculator? Answer: Scott Flansburg won the Guinness World Record in 2001.
Trivia Question: When was the number googol first used? Answer: In 1938 by Milton Sirotta, who was only nine years old.
Trivia Question: Which Indian Astronomer discovered zero around 600 A.D? Answer: Brahmagupta discovered zero.
Trivia Question: What German woman formulated theories to understand relativity? Answer: Emmy Noether formulated theories to understand relativity.
Trivia Question: Which mathematician published more papers during his lifetime than any other mathematician in history? Answer: Paul Erdős published more papers than any other mathematician.
Trivia Question: What is the fastest someone has ever counted to one billion? Answer: Jeremy Harper streamed his attempt in 2007. It lasted 89 days.
Trivia Question: Hundred was derived from what Norse number? Answer: Hundrath, which means 120.
Trivia Question: What mathematical theory explains the randomness of nature? Answer: The butterfly effect, which was discovered by meteorologist Edward Lorenz.
Trivia Question: Where was the oldest mathematical artifact found? Answer: The Lebombo bone in the Lebombo Mountains.
Trivia Question: How was Eratosthenes able to determine the Earth’s diameter? Answer: A rod and the rule of three.
Trivia Question: Who developed the cartesian axes? Answer: René Descartes developed the cartesian axes.
Trivia Question: What is the Pythagoras’ Constant, discovered by the first mathematician around 500 BC? Answer: The square root of two.
Trivia Question: Where was the first recorded instance of math games played? Answer: Africa, in the south of the Sahara.
Tricky Mathematical Trivia Questions and Answers
Trivia Question: What is the only number that has the same number of letters as its meaning? Answer: Four has the same number of letters as its meaning.
Trivia Question: How many seconds are in one day? Answer: 86,400 seconds.
Trivia Question: What is the billionth digit of Pi? Answer: Nine is the billionth digit of Pi.
Trivia Question: What is the mathematical name for a pound sign (#)? Answer: Octothorpe is the name for a pound sign.
Trivia Question: What number doesn’t have its own Roman numeral? Answer: Zero doesn’t have a Roman numeral.
Trivia Question: What is the only even prime number? Answer: Two is the only even prime number.
Trivia Question: Is Pi a rational or irrational number? Answer: Pi is irrational. It cannot be written as a fraction.
Trivia Question: What is the smallest perfect number? Answer: Six is the smallest perfect number.
Trivia Question: What is our current numerical system based on? Answer: The Hindu-Arabic numeral system.
Trivia Question: What is the most popular lucky number? Answer: Seven is a popular lucky number.
Trivia Question: What is the most popular two-digit number? Answer: Thirteen is a popular two-digit number.
Interesting Math Trivia Questions and Answers
Trivia Question: Which is the most prime number of the first ten? Answer: Seven because it can’t be divided or multiplied by the first ten.
Trivia Question: How much would the paper weigh if you printed out the number Googolplex? Answer: More than the entire planet!
Trivia Question: What is the only number spelled with letters in alphabetical order? Answer: Forty is spelled in alphabetical order.
Trivia Question: What letter does every odd number have in it? Answer: Every odd number has an ‘e’ in it.
Trivia Question: What are the only prime numbers that end in 2 and 5? Answer: Two and five.
Trivia Question: How many lives are cats said to have? Answer: Nine.
Trivia Question: How many cupcakes are in a baker’s dozen? Answer: Thirteen.
Trivia Question: How many colors are needed on a map to make sure that no border will share a color? Answer: Four.
Trivia Question: Where is four considered an unlucky number? Answer: In Asia, four is considered an unlucky number.
Trivia Question: How do you laugh in Thai text lingo? Answer: 555.
Easy Math Trivia Questions And Answers For Kids
Trivia Question: What does the Roman numeral “X” equal? Answer: Ten.
Trivia Question: What is the perimeter of a circle called? Answer: The circumference.
Trivia Question: What is an angle called if it’s greater than 90 degrees? Answer: Obtuse.
Trivia Question: What is the top number of a fraction called? Answer: Numerator.
Trivia Question: An improper fraction is always greater than what number? Answer: One.
Trivia Question: Which prime number comes after 3? Answer: Five.
Trivia Question: What is a whole number? Answer: Any number without a decimal point.
Trivia Question: What does a century represent? Answer: 100 years.
Trivia Question: What are integers? Answer: They are like whole numbers, but they can include negative numbers.
Trivia Question: What is the basic metric unit of mass? Answer: Kilogram.
Trivia Question: What is the math term described as the likelihood that something will happen? Answer: Probability.
Trivia Question: What is the first digit of Pi? Answer: Three.
Trivia Question: What common math term means ‘for every one hundred’ in Latin? Answer: Percent.
Trivia Question: What may be mixed, complex, or vulgar? Answer: Fractions.
Trivia Question: What was developed as a tool to investigate a change in natural sciences? Answer: Calculus.
Trivia Question: The most notable achievement in Islamic Mathematics was the development of what? Answer: Algebra.
Trivia Question: Which mathematician noticed the morning and evening star were one and the same? Answer: Pythagoras.
Trivia Question: What unit of time is 1/1000 of a second? Answer: A jiffy.
Multiplication, Division, and Square Root Math Trivia Questions
Trivia Question: What is the square root of 144? Answer: Twelve.
Trivia Question: What is 64 divided by 8? Answer: Eight.
Trivia Question: What is five squared? Answer: Twenty-five.
Trivia Question: What is three squared? Answer: Nine.
Trivia Question: What is 16 minus 8? Answer: Eight.
Trivia Question: What is 91 divided by 7? Answer: Thirteen.
Trivia Question: What is five to the power of zero Answer: One.
Trivia Question: What is 24 plus 11? Answer: Thirty-five.
Trivia Question: What is the square root of 81? Answer: Nine.
Trivia Question: If Mark has 56 legos and Angelo has 24 legos, how many legos do they have together? Answer: Eighty legos.
Trivia Question: If Lacey has 84 pink flowers, and Andrew has 95 flowers, how many flowers do they have in total? Answer: 179 flowers.
Trivia Question: What is the least common multiple of 6, 8, and 12? Answer: Twenty-four.
Multiple Choice Math Trivia Questions And Answers
Trivia Question: Can Pi be written as a fraction? Answer: No.
Trivia Question: Are all sides equal in an Isosceles triangle? Answer: No, only two are equal.
Trivia Question: Which number is greater, a googol, or a quadrillion? Answer: A googol.
Trivia Question: Is negative four a natural number? Answer: No.
Trivia Question: What is bigger, 100, or 10 squared? Answer: They’re the same!
Trivia Question: Does a convex shape curve inward or outward? Answer: Outward.
Trivia Question: In school, Albert Einstein failed most of the subjects, except for physics and math. Answer: Yes.
Math Trivia Questions About Shapes
Trivia Question: How many sides does a nonagon have? Answer: Nine.
Trivia Question: How many equal sides do Icosahedrons have? Answer: Twenty.
Trivia Question: What is a shape with eight sides called? Answer: An octagon.
Trivia Question: How many sides does a dodecahedron have? Answer: Twelve.
Trivia Question: How many sides does a hexagon have? Answer: Six.
Trivia Question: What’s a polygon with four unequal sides called? Answer: Quadrilateral.
Trivia Question: How many sides does an enneadecagon have? Answer: Nineteen.
Trivia Question: What is a polygon with eight sides? Answer: An octagon.
Trivia Question: What is the name for the longest side of a right triangle? Answer: Hypotenuse.
Trivia Question: How many equal sides does an icosahedron have? Answer: Twenty.
Trivia Question: What is the name for a three-sided polygon? Answer: Triangle.
More Fun Math Questions And Answers
Trivia Question: What flat image can also be displayed in 3D? Answer: A hologram.
Trivia Question: What number does a giga stand for? Answer: A billion.
Trivia Question: What is the prefix meaning 10? Answer: Deka.
Trivia Question: A composite number has what? Answer: One factor.
Trivia Question: What number is twice the sum of its digits? Answer: Eighteen.
Trivia Question: The lemniscate is the shape of what mathematical symbol? Answer: The infinity symbol.
Trivia Question: What was the number zero originally called? Answer: Cipher.
Trivia Question: What is the study of quantity, structure, space and change? Answer: Mathematics!
Trivia Question: The Fields Medal is the mathematical equivalent to what? Answer: The Nobel Prize.
Trivia Question: Where did Archimedes come from? Answer: Syracuse, Greece.
Trivia Question: How many moves does it take to solve a Rubik’s cube? Answer: No more than 20 moves.
Trivia Question: When is Pi Day celebrated? Answer: March 14.
Trivia Question: What number is represented in Roman numerals by the letter D? Answer: 500.
Trivia Question: Where were the Arabic Numerals invented? Answer: India.
Trivia Question: What’s the first number to contain the letter A? Answer: One thousand.
Trivia Question: What number comes first when arranged alphabetically? Answer: Eight.
Trivia Question: How many digits of pi are there? Answer: Infinity.
Trivia Question: In Chinese and Japanese cultures, the number 4 is associated with what? Answer: Death.
Trivia Question: What is the symbol of division called? Answer: Obelus.
Trivia Question: What are the first four digits of Pi? Answer: 3.141
Trivia Question: How many degrees is a full circle? Answer: 360.
Trivia Question: Who invented the equal sign? Answer: Robert Recorde.
Trivia Question: What is the only even prime number? Answer: Two.
Trivia Question: Markings on animal bones indicate humans have been doing math since when? Answer: 30,000 BC.
Trivia Question: What did John Napier invent in 1614? Answer: Logarithms 50.
Trivia Question: In a group of 23 people, what is it called when there’s a fifty percent chance two will have the same birthday? Answer: The Birthday Paradox.
Trivia Question: What is the meaning of crore? Answer: Ten million.
Trivia Question: If there are 17 postcards in a shop and you buy 6 – how many postcards are left? Answer: Eleven postcards
Trivia Question: If there are 64 popsicles to split among 16 students, how many popsicles would each student get? Answer: Four popsicles.
Trivia Question: Jamie reads 14 pages in her 38-page book. How many pages are left? Answer: Twenty-four pages.
Trivia Question: If there are 9 chocolate bars and Chris eats 3, how many are left? Answer: Six chocolate bars.
More Fun Trivia Questions and Answers
Below are more quiz questions to stump you and your friends.
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January Nelson
January Nelson is a writer, editor, and dreamer. She writes about astrology, games, love, relationships, and entertainment. January graduated with an English and Literature degree from Columbia University.
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40 Fun Math Questions with Answers
Learning math can be super fun if students are shown it in the right way. Students run away from hard math problems but don’t know that solving those questions can be fun and exciting . Solving math riddles and fun Math Questions is an interesting game that helps polish our aptitude and boosts our concentration and brainpower.
With time, the approaches to solving math and perception of the subject have changed a lot. These new perceptions of math have made the subject and its concepts more appealing. One only needs to know and understand that math is not just a subject or task; it is a mindful and fun-filled activity for the brain.
You can easily get 50+ Funny math questions – Download for free here!
Honestly, hard math questions or problems are all illusions; it is all about knowing and understanding the math sufficiently, its concepts, easiness, and relatability. If teachers have the right attitude and patience, solving and learning math can be most engaging, enjoyable, and delightful for the students. Here are some tricky and engaging yet funny math questions with answers for a fantastic brainstorming session.
Fun Math Questions For Students
- How can you make number six with these three matchsticks without cutting them?
100+ Free Math Worksheets, Practice Tests & Quizzes
Answer: Just move the first and the second matchstick in the shape of a V; it will form a six in roman number.
- Get five squares in the following gird. But you can only remove or move four matchsticks.
Answer: Remove the edge matchsticks from the middle row and column as shown in the picture.
- What will be the last number in the following series of numbers?
32, 45, 60, 77, ?
Answer: 8×4 =32, 9×5 = 45, 10×6 = 60, 11×7 = 77, 12×8 = 96.
Answer2: 32+13 = 45. 45+15 = 60, 60+17 = 77, 77+19 = 96.
So, the following number will be 96.
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- Solve this equation.
Answer: One Triangle = 10 as per the first equation
One Circle = 2 on solving the second equation
One Star = 1 on solving the equation third
So, the answer is 1.
- Find the correct answer to the equation.
Answer: 3 Apples = 30; So, 1 Apple = 10
As per the second equation, one banana = 1
As per the third equation, coconut half = 1
So, the half coconut + 1 Apple + 3 Banana = 12
- Fill the place for the question mark.
Answer: (8×4) – (6×2) = 20
(5×6) – (3×4) = 18
(9×4) – (5×3) = 21
- What goes into the empty box?
Answer: Seeing the rows
1+2= 3; 3+2= 5.
2+2= 4; 4+2=6.
Another way: See the columns
1 —> 2; 3 —> 4; 5 —>6
- Correct this equation but remember you can only move one stick.
Answer: Move the top right matchstick from the 8 and place it on — sign to make it + sign. The equation will be 9+6 = 15.
- Which number will be at the place of the question mark?
Answer: 2 Bananas = 30; so, 1 banana will be = 15
2 cherries + 2 cherries = 20; so, 1 cherry will be = 5
2 apples = 8; so, 1 apple will be = 4
Therefore; 1 banana + 1 cherry + 1 apple = 15 + 5 + 4 = 24
- Find the number for the blank space.
Answer: 8+6 =14; 14+8 = 22; 22+10 = 32; 32+12 = 42.
So, 42 will be the answer.
- Count the triangles.
- Can you solve this number puzzle?
Answer: (7*4) + (4*5) = 28+20 = 48;
(9*3) + (3*6) = 27+18 = 45;
(5*?) + (?*8) = 13*? = 6
- What is the missing number in the following grid?
Answer: (3 + 2) x 2 = 10
(1 + 9) x 2 = 20
(0 + 8) x 2 = 16
(7 + 5) x 2 = 24
So, the number is 6.
- Which numbers in pins should I stroke to get an exact 100 score?
Answer: Strike number 48, 39, 13 as 48 because 48+39+13 = 100.
- Find the appropriate number for the blank space in the grid.
Answer: On analyzing the grid, one can find that the fourth row contains the average of numbers in the first three rows.
So, (3+5+1) / 3 = 3 is the answer.
- Again, find the missing number?
Answer: Look carefully; these numbers are organized in groups of two digits,s such as 75, 34, and 68 in the first row and 83, 42, and 7. In the second row.
Now, the same sequence is followed with every digit. The first number from the digit is increased by one, and the second number is decreased by two. 6+1 = 7 and 8-2 = 6 in the last digit.
Therefore, the missing number is 6.
- What is the missing number in the given pie?
Answer: Just divide the pie in quarters and see the answer logic.
7+? = 11 →? =
18. Add only one matchstick to make the equation right.
Answer: Add the one matchstick to the plus sign between any 5 to make it 4.And 545+5 = 550.
- Find the next number for the below series with the help of the given dies. 19, 11, 11, 9, ?
Answer: 7+3+2 = 12
- How many other triangles does this triangle comprise?
Answer: 23, count them carefully and patiently.
- Find the answer to this puzzle picture?
Answer: The answer is 18.
Reason: 5*8 = 40; 8*3 = 24; and 5*6 = 30. So, 6*3 = 18.
- Which is heavier, one pound feathers or one pound iron piece?
Answer: Both are equally heavier.
- There are ten fishes in a tank; two of them drown, four swim away, and three fishes die. What is the number of fish present in the tank?
Answer: All ten fishes because no one has removed any fish from the tank.
- Find the answer if 2=6, 3=12, 4=20, 5=30, 6=42, 9=?
Answer: 2 = 2×3 = 6
3 = 3×4 = 12
4 = 4×5 = 20
5 = 5×6 = 30
6 = 6×7 = 42
7 = 7×8 = 56
8 = 8×9 = 72
9 = 9×10 = 90
So, 9 = 90.
- Guess the correct answer if 1+4 = 5; 2+5 = 12; 3+6 = 21; 8+11 = ?
Answer: 1+4 = 4×1+1 = 5
2+5 = 5×2+2 = 12
3+6 = 6×3+3 = 21
8+11 = 11×8+8 = 96
- How is this possible with numbers?
19+3 = 1622
Answer: These equations are written as the deviation of the numbers and then the addition of the numbers.
For example: 6+4 = (6-4)(6+4) = 210.
- Solve this equation to find X.
12/3 (5-3+2) + 2004 = X
Answer: X = 2004
- Solve this number quiz.
Answer: As per the sample equations, 2+3 = 2x(2+3) = 10; 7x(7+2) = 63; and so on.
So, 9+5 = 9(9+5) = 126.
- Solve this number mystery.
If 3, 2, 4 = 10
4, 3, 5 = 17
5, 4, 6 = 36
6, 5, 7 = 37
Answer: The hidden equation in these numbers is like 3X2+4 = 10 for the first one.
Similarly, 7X6+8 = 50
- Elon brought a container holding six chocolate bars. If he needs to divide the chocolate bars with his six friends so that all of them get one bar, the container still has a chocolate bar left. How did he do this?
Answer: It is possible because he had given one chocolate bar to five friends and one of his friends got a chocolate bar in the container. In this way, all his friends got chocolates, and one is still in the container.
- When I was four years old, my sister was half my age. Now, I am 18. How old is my sister now?
Answer: My sister’s age when I was 4 = half my age = 4/2 =2 years.
So, my sister is two years younger than me.
When I am 18, he will be 16 years old.
- Harry had six siblings. All of them have two years of age difference. The youngest is Jessy, his seven years old sister, while Harry is the most senior. Calculate Harry’s age.
Answer: The youngest sibling, Jessy, is seven years old. Harry has six siblings, which means they are a total of 7 siblings, and Harry is the eldest among them. All of them have two years of age difference, which means that adding six times two to seven can give us an answer. 7 + 2 + 2 + 2 + 2 + 2 + 2 = 19; so, Harry is 19.
- Place the correct symbol from *, +, -, /, in any order to balance the equation.
2 _ 1 _ 6 _ 6 = 48
Answer: 2 * 1 + 6 * 6 = 48
- Typically, the number is odd. But if you remove one letter from it, it will change to even. Guess the number.
Answer: The number is 7(seven). When its letter ‘s’ is removed, it becomes ‘even,’ but actually, 7 is an odd number.
- Angel visited a fair near her home. She traversed on her new bicycle presented by her father for winning the art contest. After reaching the fair, Angel noticed that 14 bicycles and tricycles were parked. The total number of wheels in the parking area is 38. Can you find the number of tricycles that were parked there?
Answer: Total bicycles and tricycles = 14
Total number of wheels = 38
All the cycles have minimum wheels, 14 X 2 = 28;
38 – 28 = 10
There are ten extra wheels other than bicycles, meaning ten tricycles.
- What three numbers give the same addition and multiplication operations result?
Answer: The three numbers are 1, 2, and 3; because, 1+2+3 = 6. And, 1*2*3 = 6.
- What will the following two numbers be in this numeric series?
22, 21, 23, 22, 24, 23, ?, ?
Answer: The following two numbers would be 25 and 24; the pattern of the series is the second number is one less than the first number, and the third number is two more than the second.
Another logic can be a consecutive number pattern formed by alternate numbers.
- A grandfather, two fathers, and two sons went to a theater together. How many tickets do they need to buy, assuming one for each?
Answer: They will need only three tickets because this is the trio of three generations: a grandfather, his son, and his grandchild (son’s son).
- John adds six to eight and gets the answer two; his teacher also accepts it. Why?
Answer: Because the question was on time. She asked to add six hours to 8 AM. So, he got the correct answer at 2 PM.
- Get the total of 1000 by adding only eight 8’s.
Answer: 888 + 88 + 8 + 8 + 8 = 1000
You may also like to read- How to divide fractions
These were some funny yet challenging math problems for students to brainstorm and recall the concepts, formulas, and procedures teachers have taught them in classes. Along with the learning benefits, these funny math questions can drive to the positive side of learning math, and they realize that math is neither complex nor a worthless subject.
Nevertheless, teachers should also understand that memorizing the procedures is not what students require. Therefore they should instead focus on creating an understanding of math and promote logical thinking in students.
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Top 5 Trickiest Mathematics Questions From Around the World
Math(s) can be a tricky subject for many students. But some questions are trickier than others.
Put on your thinking caps because we searched the internet for the top 5 trickiest mathematics questions from all around the world.
Solutions are provided at the end of all the questions (but no peeking).
If you’re up for an extra challenge, we’ve even got a bonus question at the end.
But before that… a quick announcement. World Maths Day – the world’s largest mathematics competition is back!
World Maths Day, happening on 8 March 2023, is a global celebration of mathematics where millions of students aged 5 to 18 across the world compete in Live Mathletics challenges. It’s all-inclusive, free, and open to schools as well as students learning from home. Learn more about it here .
Now, let’s jump in!
1. People on a Train 🚂
Country of origin: England
In a since-deleted tweet, a mum from England tweeted this word problem in a test meant for kids aged 6 to 7 in 2016. It went viral and even some adults were having trouble figuring out the answer.
The Question:
There were some people on a train.
19 people get off the train at the first stop.
17 people get on the train.
Now there are 63 people on the train. How many people were on the train to begin with?
2. You’ll Never Forget Cheryl’s Birthday 📅
Country of origin: Singapore
Problems that test logical reasoning are common in Math(s) Olympiads. But this question from the 2015 Singapore and Asian Schools Math Olympiad contest for students 14 to 15 years old got the whole world stumped.
Albert and Bernard just became friends with Cheryl, and they want to know when her birthday is.
Cheryl gives them a list of 10 possible dates:
- May 15, May 16, May 19
- June 17, June 18
- July 14, July 16
- August 14, August 15, August 17
Cheryl then tells Albert and Bernard separately the month and the day of her birthday respectively.
Albert: I don’t know when Cheryl’s birthday is, but I know that Bernard doesn’t know too.
Bernard: At first I don’t know when Cheryl’s birthday is, but I know now.
Albert: Then I also know when Cheryl’s birthday is.
So when is Cheryl’s birthday?
3. Taming the Snake 🐍
Country of origin: Vietnam
This question is not only tricky but might also take a while. According to VNEXPRESS, this puzzle is meant for third graders/year 3 students (8 year olds) in Vietnam!
The Puzzle:
Image source: VN Express
All you have to do is use the digit 1 to 9 once to fill in the boxes to make the entire equation equal to 66. The expression should be read from left to right.
Sounds easy? Not quite.
In case you’re wondering, the boxes containing colon represents division.
4. Remember Where You Parked Your Car 🚗
Country of origin: Hong Kong
This problem has been around for a while but resurfaced on an elementary/primary school entrance exam in Hong Kong.
Apparently, six-year-olds were expected to know the answer in 20 seconds or less.
What is the car’s parking spot number?
5. The Red Triangle 🔺
Country of origin: China
This question came from China and was used to identify gifted fifth grade/year 5 students (10 to 11 years old). It’s said that some of them were able to solve this question in less than one minute!
ABCD is a parallelogram. In the diagram, the areas of yellow regions are 8, 10, 72 and 79.
Find the area of the red triangle. The diagram is not to scale.
Image source: Mind Your Decisions
BONUS Tricky Math(s) Question
If you still have head space for one more, try this.
6. A Mass of Money: Helen and Ivan’s coins 💰
In 2021, a Primary School Leaving Exam mathematics question left some 12-year-old students in tears. Supposedly, this question was meant to be solved in a matter of minutes, as it is only allocated 4 marks in total.
Note: This two-part question could have been recalled from memory and rewritten by an adult, which could explain the grammatical errors.
Helen and Ivan had the same number of coins.
Helen had a number of 50-cent coins, and 64 20-cent coins. These coins had a mass of 1.134kg.
Ivan had a number of 50-cent coins and 104 20-cent coins.
(a) Who has more money in coins and by how much?
(b) given that each 50-cent coin is 2.7g heavier than a 20-cent coin, what is the mass of Ivan’s coins in kilograms?
Could You Solve These Tricky Mathematics Questions?
Or were you confused and stumped? Well, you’re not alone.
We had a really tough time understanding and solving them too.
If you’re a teacher and looking for problem and reasoning questions , consider a mathematics resource to sharpen your student’s logical thinking skills.
Now let’s get to the answers…
Question 1 answer.
19 people getting off the train can be represented by -19, and 17 people getting on the train as +17.
-19 + 17 = 2, meaning that there was a net loss of two people.
Originally, the train had 2 more people.
So if there are 63 people on the train now, that means there were 65 people to begin with.
Question 2 Answer
You can solve this by the process of elimination, based on what each person says.
Let’s go through the information line by line.
[Line 7] Cheryl then tells Albert and Bernard separately the month and the day of her birthday respectively.
This is an important piece of information because it tells us that Albert knows the month , and Bernard knows the day .
So Albert knows it’s either May, June, July or August, and Bernard knows that it’s either 14, 15, 16, 17, 18 or 19.
[Line 8] Albert: I don’t know when Cheryl’s birthday is, but I know that Bernard doesn’t know too .
The second part is the clue. The fact that Albert claims that Bernard doesn’t know means it can’t be 18 or 19. Why?
If it were 19, then Bernard would know the exact birthday, as May is the only date with 19.
If Bernard was told the date was 18, he would also know that the birthday must be June 18, as that’s the only date with 18.
So you can rule out May 19 and June 18.
But how is Albert sure that Bernard didn’t hear 18 or 19?
It must be because Albert knows the birthday is not in May or June.
If Albert was told the month was May, he couldn’t be sure that Bernard wasn’t thinking of the number 19. Therefore, you can cross out May.
And if Albert was told the month of June, he couldn’t’ be sure if Bernard wasn’t thinking of the number 17. So June is also out.
In other words, Albert was told either July or August .
Based on the above information, you can eliminate these five dates – May 15, May 16, May 19, June 17 and June 18.
Dates left: July 14, July 16, August 14, August 15 and August 17.
[Line 9] Bernard: At first I don’t know when Cheryl’s birthday is, but now I know.
Upon hearing Albert’s statement, Bernard now figures this out.
If Bernard was told the date was 14, it would still be ambiguous whether the month was July or August. So you can rule out he was not told 14.
You are now left with three dates – July 16, August 15 and August 17.
[Line 10] Albert: Then I also know when Cheryl’s birthday is.
Albert couldn’t have been told it was August, as there are two dates in August. So you can deduce that he must have been told it’s July.
Therefore, the answer is July 16 .
Question 3 Answer
Let’s start by breaking the puzzle into bite-size pieces, one step at a time.
First, write the expression in the normal way you usually write mathematical expressions. This makes it easier to put in the numbers.
__ + 13 × __ ÷ __ + __ + 12 × __ – __ – 11 + __ × __ ÷ __ – 10 = 66
Next, let’s look at how many ways are there to put the numbers 1 to 9 in these 9 different boxes.
You can put 9 different numbers in the first box.
So that’s 9 possibilities in the first box, 8 possibilities in the second box, followed by 7 boxes in the third box and so forth.
Applying this logic, you will have one less possibility for each box, until we get to the last box.
In total, there are 9 factorial (9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 = 9!) or 362,880 possibilities .
Now that’s a lot of possibilities to try and work by purely guessing and checking.
So let’s try working out the solution logically.
Remember the BEDMAS/BIDMAS/PEDMAS/PEMDAS rule you learnt in school?
To respect the order of operations, add parentheses or brackets to the equation. This means that multiplication or division comes before addition or subtraction.
__ + ( 13 × __ ÷ __ ) + __ + ( 12 × __ ) – __ – 11 + ( __ × __ ÷ __ ) – 10 = 66
Now it’s time to fill in some numbers to guess and check our assumptions.
What if you first used the numbers 1 to 9, from left to right ?
1 + (13 × 2 ÷ 3 ) + 4 + (12 × 5 ) – 6 – 11 + ( 7 × 8 ÷ 9 ) – 10 = 52.88…
Hey, that’s pretty close to 66!
What if you wrote the numbers in descending order , from 9 to 1?
9 + (13 × 8 ÷ 7 ) + 6 + (12 × 5 ) – 4 – 11 + ( 3 × 2 ÷ 1 ) – 10 = 70.85…
That also gets you pretty close to the answer.
So how can you modify this expression to get to 66? The key is to look at the numbers and their positions.
In the next few steps, we used trial and error – testing and moving the numbers around until we got to 66.
Here’s one solution we got:
9 + (13 × 4 ÷ 8 ) + 5 + (12 × 6 ) – 7 – 11 + ( 1 × 3 ÷ 2 ) – 10 = 66
Now for the keen observers out there, you’d notice that you can switch the numbers that are being added, to generate another solution.
For example:
9 + (13 × 4 ÷ 8) + 5 + (12 × 6) – 7 – 11 + (1 × 3 ÷ 2) – 10 = 66 OR (switch 5 and 9) 5 + (13 × 4 ÷ 8) + 9 + (12 × 6) – 7 – 11 + (1 × 3 ÷ 2) – 10 = 66
Similarly, you can switch the numbers that are multiplied, and it won’t affect the final answer.
9 + (13 × 4 ÷ 8) + 5 + (12 × 6) – 7 – 11 + ( 1 × 3 ÷ 2) – 10 = 66 OR (switch 1 and 3) 9 + (13 × 4 ÷ 8) + 5 + (12 × 6) – 7 – 11 + ( 3 × 1 ÷ 2) – 10 = 66
This means anytime you come up with one way to solve it, you can generate a total of four ways – because multipclation and addition are commutative (it doesn’t what the order of the numbers are, the answer is the same).
In fact, there are multiple answers to this puzzle. 136 to be exact. How do we know?
Now, that’s a problem to solve for another time. 😉
Question 4 Answer
The ‘trick’ to this question is that it requires no math(s) at all!
All you have to do is to look at it from a different perspective – literally.
Turn the question upside down, and you’ll see that it’s a simple number sequence, with the answer being 87.
Question 5 Answer
Even though it looks complicated, this question can actually be solved with a simple calculation: 79 + 10 – 72 – 8 = 9
Wait, what? But how?
To get there, you need to understand basic arithmetic and know that the area of a parallelogram and the area of a triangle are related.
The ‘secret’ is to identify triangles with areas that are half of the parallelogram.
The area of a triangle is (base × height) ÷ 2, and the area of a parallelogram is base × height.
A triangle whose base equals one side of the parallelogram, and whose height reaches the opposite side of the parallelogram, has exactly half the area of a parallelogram.
This is true for a pair of triangles as well – if the pair of triangles span one side and if their heights reach the opposite side.
To make solving this easier, you can start by labelling the unknown areas with letters a to f . And let the area of the red triangle be x .
Presh Talwalkar from Mind You Decisions, breaks down the solution in his video here .
Question 6 Answer (Part a)
The key is to remember that Helen and Ivan have the same number of coins.
Let’s look and compare the total number of coins for each type.
Ivan has 40 more 20-cent coins than Helen. For them to have the same number of coins, you have to ‘balance’ this out in terms of the 50-cent coins.
This means Helen must have 40 more of the 50-cent coins than Ivan.
Let’s now compare the amount of money of each coin type that Helen has, minus that of Ivan.
Since Helen has 40 fewer (104 – 64) of the 20-cent coins, so Helen will have:
– 40 × 0.2 = – 8
This means she has $8 less than Ivan (in 20-cent coins).
On the other hand, Helen has 40 more of the 50-cent coins than Ivan. So she will have:
+ 40 × 0.5 = 20
This means she has $20 more than Ivan (in 50-cent coins).
Now, you can add this together to find out how much more or less money Helen has.
– 8 + 20 = 12
Therefore, Helen has $12 more than Ivan.
Question 6 Answer (Part b):
The total mass of Helen’s coin is 1.134kg. And you know that a 50-cent coin is 2.7g heavier than a 20-cent coin.
From the first part of the question, you can see that if you had Helen’s coins, you can ‘exchange’ 40 of the 50-cent coins for 40 of the 20-cent coins, that will be the total coins Ivan has. And you can get the weight difference from that.
Let’s compare the weight of Helen’s coins to Ivan’s coins.
In terms of the 20-cent coins, subtract 40 of the 20-cent coins, multiplied by the weight of the coins.
– 40 × 0.2 weight
In terms of the 50-cent coins, add 40 of the 50-cent coins, multiplied by the weight.
+40 × 0.5 weight
So the net impact of this, Helen compared to Ivan, has 40 more of the heavier coins – 40 more of the 50-cent coins, compared to the 20-cent coins than Ivan.
+ 40 × 0.5 weight / 40 × (0.5 – 0.2 weight)
You know the difference in weight between 50-cent and 20-cent coins is 2.7 grams. Therefore, you can substitute that in the equation.
+ 40 × 0.5 weight / 40 × (2.7 g) –> 40 × (2.7 g) = 108g
So Helen’s weight of coins is 108 g more than Ivan.
To get Ivan’s weight, we take Helen’s coins and subtract by 108g.
1134g – 108g = 1026g
Convert that to kilograms to get the answer, 1.026 kg .
How did you fare? Share this with your students or friends who love a great math(s) challenge!
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Puzzle Time! Can you solve these challenging math puzzles?
Table of Contents
Introduction
Maths riddles with answers help children develop interest and aptitude in mathematics. Parents can help their children solve these riddles provided in the article.
Math riddles can be tricky problems with challenging solutions. These application based questions help your child think out of the box. They will help your kids improve their IQ and academic performance.
Ask your child to solve the maths riddles and puzzles provided in this article, to keep them engaged with academically beneficial activities.
Riddles with Answers
Here is a PDF that consists of some more fun and tricky math riddles that you will enjoy reading and answering. They can think of these maths riddles with the answers as a warm-up activity that prepares young students for the challenges ahead. Click on the download button to know more.
10 Challenging Maths Riddles with Answers for Kids
1. A carton contains some apples which were divided into two equal parts and sold to 2 traders Tarun and Tanmay. Tarun had two fruit shops and decided to sell an equal number of apples on both shops A and B respectively. Tanya visited shop A and bought all the apples in the shop for her kids. But one apple was left after dividing all the apples among her children. Each child got one apple, find the minimum number of apples in the carton?
Explanation: Let the number of children be X Therefore, the number of apples bought by Tanya = ( X + 1) The total number of apples in the shop A = ( X + 1) Total number of apples bought by Trader Tarun = 2( X + 1 ) Total number of apples in the carton = 4( X + 1 ) Now, minimum no of apples in carton: We assume: X is not equal to 0 X is not equal to 1 ( Tanya has children not a single child) X equal to 2 (Tanya has a minimum of 2 children) When X = 2 4( X + 1 ) = 4( 2 + 1 ) = 12 Thus, minimum of 12 apples
2. A monkey is trying to climb a coconut tree. He takes 3 steps forward and slips back 2 steps downward. Each forward step is 30 cm and each backward step is 40cm. How many steps are required to climb a 100cm tree?
Explanation: Each time the Monkey tries to go up: Climbs Upward = 3 X 30cm = 90 cm (takes 3 steps) Slips Downward = 2 X 40cm = 80cm (takes 2 steps) Total number of steps taken in each forward attempt = 3 steps + 2 steps = 5 steps Effectively moves 10 cm upwards (90cm - 80cm = 10cm) 100cm/10cm = 10 Therefore, the monkey needs to cover 10 X 5 steps = 50 steps to reach the top
3. A construction site requires at least 5 laborers to get a job done in 12 days. How many days will it take if 12 laborers are hired for the same job?
Explanation: Let X be the amount of work to be done Let Y be the number of days taken by 12 laborers Equation of work done by 5 laborers: X/5 = 12 days X = 60 Equation of work done by 12 laborers: X/12 = Y 60/12 = Y Y= 5
4. You have a pound of cotton and a pound of iron, which will weigh more?
Explanation: 1 pound cotton = 1 pound iron Pound is a unit of weight.
5. The sum of a daughter and mother's age is 55. The age of the daughter is the mother's age reversed. Find the age of the mother and daughter, if the age of the mother is greater than 40 years.
Explanation: Let The first digit of the mother’s age be X Let The second digit of the mother’s age be Y Thus the mother's age is XY Daughters age is YX Let us assume X >Y , as mother is always older than daughter Sum of age is given by equation: ( (10X) + Y) + ( (10Y) + X ) = 55 11X + 11Y = 55 Therefore possible ages can be : Mother: 32 and Daughter: 23 Mother: 41 and Daughter: 14 As mentioned in the riddle, mother is above 40 years of age so we select the second solution.
6. You have 50 biscuits. How many times can you subtract 5 from 50 biscuits?
Explanation: Once only because after that it will not be 50 biscuits. As you subtract 5 biscuits it will be 45 and not 50 anymore.
7. Get an even number from 7 without adding, subtracting, multiplying, or dividing any number?
Explanation: SEVEN - S = EVEN
8. It is 9 am now, Rita studies for 2 hours, takes a bath for 1 hour and then has lunch for 1 hour. How many hours are left before 9 am tomorrow?
Explanation: Rita takes 4 hours (2+1+1) to complete studying, bathing and eating her meal. There are 24 hours between 9am today and 9am tomorrow. 24 hours - 4 hours = 20 hours
9. 8 apples are there, you take 4 away and then you return 1 apple. How many apples do you have?
Explanation: You got 4 apples for yourself and returned 1 apple Therefore 4 - 1 = 3 apples
10. The speed of a train is 3m/sec and it takes 10 secs to cross a lamp post. What is the length of the train?
Explanation: The Train covers 3m in 1 sec Therefore in 10 secs it will cover = 3m X 10 sec = 30 m In 10 sec, the train of length 30m will cross the lamp post.
You can find more math riddles and puzzles for your child on Cuemath. It is a platform for kids that offers customised math riddles, puzzles, simulations and games, to help develop their math aptitude and also improve their academic performance.
All underlying maths problems of your child will be addressed by top mathematics teachers of the nation. Enroll today to start your child’s maths journey.
Solve these challenging maths riddles with your child to understand their conceptual clarity. If your child is not performing well in mathematics, you can figure out their shortcomings by analyzing their approach towards solving these riddles.
Sit with your child while solving math riddles to assess problem-solving ability. Share hints to help them solve most of the riddles correctly and explain each and every answer to make sure your child never repeats similar mistakes while solving problems.
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- How to Transform Math Time into Fun Time?
Do you think you’re good at math? Do you think you know more than the average person about math trivia? Well, we’ve got a challenge for you! We’ve compiled a list of 75+ math trivia questions with answers ranging from easy to tricky. See how many you can get right!
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Children engage most with fun math trivia questions that make them giggle. Here are 25 funny math questions that will turn your classroom or a pajama party of toddlers into a laughing riot or serve as excellent icebreakers in any gathering:
Q1: Why was 6 afraid of 7?
A1: Because 7, 8, 9!
Q2: What do you call a hen that can count her own eggs?
A2: Mathemachicken!
Q3: Why is the math book so sad?
A3: Because it has so many problems!
Q4: What comes six times in a day, four times in a week, twice in a month, and once in a year?
A4: The letter “f.” In 24 hours, “f” comes in four, five, fourteen, fifteen, and twenty-four. In seven days, “f” comes in first, fourth, and fifth. In four weeks, “f” comes in first and fourth. In one year, “f” is only in February.
Q5: Who’s the king of the pencil box?
A5: The ruler!
Q6: What’s the favorite season of a math teacher?
A6: SUMmer!
Q7: What’s the favorite dish of a math teacher?
Q8: Why did the plant in the math class become a curiosity in the town?
A8: Because it grew square roots!
Q9: Why are circles the hottest geometric shape?
A9: Because it’s always 360 degrees!
Q10: Why do social activists not like algebra?
A10: Because they are not comfortable with inequalities!
Q11: How does algebra help with dancing skills?
A11: It makes you good at algo-rhythms!
Q12: Which tool can you use to plow your farm?
A12: Pro-tractor!
Q13: What tool do mathematicians use to twist wires?
A13: Multi-Pliers!
Q14: Who do both the acute and the obtuse triangles hate?
A14: A 90-degree angle because it’s ALWAYS right!
Q15: Why is a Circle always ignored in a party of geometric shapes?
A15: Because other shapes think he’s pointless!
Q16: Why did Square not attend the party of geometric shapes?
A16: Because it had an accident and became a WRECK-tangle!
Q17: What did zero think when it saw eight?
A17: What a nice belt!
Q18: How did the boxer break the calculator?
A18: He tried to punch the numbers in!
Q19: What do children think about addition?
A19: They think it’s a plus!
Q20: Why did the mixed-number fraction refuse to go out with the other fraction?
A20: Because it was improper!
Q21: How can one turn root beer into beer?
A21: Pour it into a square glass!
Q22: Do you know what’s odd in math?
A22: Any number that’s not divisible by 2!
Q23: Why is the fantasy novel written by a mathematician so confusing?
A23: It had imaginary numbers!
Q24: Which geometric shape is most adorable?
A24: A-cute angle!
Q25: Which monster is best at math?
A25: Count Dracula, of course!
Do you have someone who’s math-phobic? Get them started on these easy math questions, and you’ll soon see them solving math questions for fun.
Q1: What’s the only even prime number?
A1: 2. Every other even number is divisible by two and hence, not a prime number.
Q2: What’s Pythagoras’ Constant?
A2: The square root of two: 1.41! Also, it was the first irrational number to be discovered.
Q3: Which number cannot be represented in Roman numerals?
A3: Zero! There’s no symbol for it in Roman numerals.
Q4: Is zero an odd number or an even number?
A4: Even. It’s divisible by two and still creates a whole number, which is zero.
Q5: Which number has a spelling with the same number of letters as the number itself?
A5: F-O-U-R!
Q6: Which is the smallest perfect number?
A6: Six! It’s a positive integer and equal to the sum of its divisors: 1, 2, and 3. It means that 1 x 2 x 3 = 6 and also, 1 + 2 + 3 = 6.
Q7: Why is March 14 the Pi Day?
A7: Because it’s written as 3/14, and the value of pi is 3.14!
Q8: What is the similarity between Pi and Pie?
A8: The mirror image of the number Pi is 3.14, which spells “PIE”!
Q9: How does the word “Pizza” show the formula to calculate its volume?
A9: For a cylinder, the volume is Pi multiplied by the radius squared, multiplied by its height! If we consider the radius of the pizza as “Z” and its height as “A,” its volume can be calculated as PI x Z x Z x A.
Q10: When are numbers “happy”?
A10: Happy numbers are those numbers that eventually reach one after a process of repeatedly summing the square of its digits. For example, 19 is a happy number: 1 2 + 9 2 = 82 and 8 2 + 2 2 = 68 and 6 2 + 8 2 = 100 and 1 2 + 0 2 + 0 2 = 1.
Q11: What’s the most common number in the world?
A11: One! It’s the number that we use to count things, and it appears in almost every mathematical equation.
Q12: What’s an “amicable” number?
A12: Amicable numbers are two numbers where the sum of one number’s divisors equals the other number and vice versa. For example, 220 and 284 are amicable numbers. For 220, the sum of its divisors is 1 + 2 + 4 + 5 + 10 + 11 + 20 + 22 + 44 + 55 + 110 = 284, and for 284, the sum of its divisors is 1 + 2 + 4 + 71 + 142 = 220.
Q13: What’s an “abundant” number?
A13: An abundant number is a number where the sum of its divisors is greater than the number itself. For example, 12 is an abundant number. Its divisors are 1, 2, 3, 4, 6, and 12, and the sum of these divisors is 1 + 2 + 3 + 4 + 6 + 12 = 28, which is greater than 12.
Q14: What’s a “deficient” number?
A14: A deficient number is a number where the sum of its divisors is less than double the number itself. For example, 9 is a deficient number. Its divisors are 1, 3, and 9, and the sum of these divisors is 1 + 3 + 9 = 13, which is less than 2 x 9 = 18.
Q15: What’s a “triangular” number?
A15: A triangular number is a number that can be represented as a triangle of dots. For example, 6 is a triangular number. It can be represented as 1 dot + 2 dots + 3 dots.
Q16: What’s a Harshad Number?
A16: Harshad numbers, also known as Niven numbers, are divisible integers by the sum of their digits. For example, 42 is a Harshad number. It is divisible by 4 + 2 = 6.
Q17: What’s an “evil” number?
A17: An evil number is a positive integer with an even number of 1s in its binary representation. For example, 3 is an evil number. Its binary representation is 11, which has two 1s, which is even.
Q18: What’s a “palindrome”?
A18: A palindrome is a word, phrase, number, or other sequence of units that can be read the same way in either direction—forward or backward. For example, the number 11011 is a palindrome, as is the phrase “Madam, I’m Adam.”
Q19: Which number is greater: a googol or a quadrillion?
A19: A googol. It represents 1 x 10 100 .
Q20: What’s an “apocalypse number”?
A20: A number with 666 digits is known as an apocalypse number. It’s named after the Biblical passage in which the number of the Beast (the Antichrist) is given as 666. The smallest Fibonacci apocalypse number is F 3184 .
Q21: What’s the Fibonacci sequence?
A21: The Fibonacci sequence is a sequence of numbers in which each number is the sum of the previous two. It begins with 0 and 1 and then proceeds as 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, and so on.
Q22: What’s the “tribonacci” sequence?
A22: The tribonacci sequence is a sequence of numbers in which each number is the sum of the previous three. It begins with 0, 0, and 1, and then proceeds as 0, 0, 1, 1, 2, 4, 7, 13, 24, and so on.
Q23: What’s the “chaos game”?
A23: The chaos game is a simple algorithm that can be used to generate fractal patterns. It involves picking a point at random inside a triangle and then finding the midpoint of the line segment between that point and each of the triangle’s vertices. The next point is chosen randomly from the three resulting midpoints, and the process is repeated ad infinitum.
Q24: What’s an “Armstrong number”?
A24: An Armstrong number is an integer where the sum of the cubes of its digits is equal to the number itself. For example, 153 is an Armstrong number: 1 3 + 5 3 + 3 3 = 153.
Q25: What’s the Golden Beauty Ratio?
A25: The golden beauty ratio is a mathematical constant that is approximately equal to 1.61803. It is often represented by the Greek letter phi, and it appears in many places in nature, such as in the spiral pattern of a nautilus shell.
To judge the attractiveness of a human face, its length and width are measured. The length is then divided by the width. The ideal result is closest to the Golden Beauty Ratio of 1.61803.
Trick math questions are designed to confuse you or misguide you while the answer’s right in front of you the whole time! Do you think that these fun math trivia questions are cute and easy to solve? Check your answers against ours and see how you fare!
Q1: If two’s company and three’s a crowd, what are four and five?
Q2: I gave a duck $9, a bee $27, and a spider $36. How much would I give to the cat?
A2: $18 (according to $4.50 per leg)!
Q3: A grandfather, two fathers, and two sons went to the movie theater. How many tickets did they buy?
A3: 3! A grandfather, a father, and a son. The grandfather is the “father” of the father. The father is the “son” of the grandfather.
Q4: A woman goes out to buy bananas. All but 3 got ruined on the way. How many good bananas does she have now?
A4: 3! All but “3” were ruined.
Q5: If there are 10 apples on the table and you take away 2, how many apples do you have?
A5: 2! You only took two apples.
Q6: I am odd. But you take away an alphabet and I am even. What am I?
A6: S-Even!
Q7: How can you arrange only eights to get the number 1000 in a mathematical equation?
A7: 888 + 88 + 8 + 8 + 8 = 1000!
Q8: How did the soccer fan know the score would be 0-0 even before the game started?
A8: Because the score is always 0-0 when the game begins.
Q9: I added 5 to 9 and got two. The teacher said I was right. Do you know how?
A9: I added 5 hours to 9 a.m. and got 2 p.m.!
Q10: How can you make 5 + 5 + 5 = 550 correct by drawing only one straight line?
A10: Add a line on the first plus sign to make it “4.” This makes the equation 545 + 5 = 550!
Q11: Calculate:
1 + 1 + 1 + 1 + 1
1 + 1 x 0 + 1 = ?
We apply the BODMAS (Brackets, Order of Powers, Division, Multiplication, Addition, and Subtraction) rule here.
So, we see a multiplication sign here and do it first. 1 x 0 = 1.
So, the lines will look like this now:
Now, notice that there are no mathematical operations after the last “1” on the first line or the first “1” on the second line. Hence, we assume that they can be put together to form the number “11.” The same goes for the last “1” on the second line or the first “1” on the third line. They can be put together to form the number “11.”
Now we get:
1 + 1 + 1 + 1 + 11 + 1 + 1 + 1 + 11 + 0 + 1 = 30.
Q12: A half is a third of which number?
A12: One and a half!
Q13: What to add between a 4 and a 5 to make the result greater than 4 and less than 5?
A13: A decimal! 4.5 is greater than four and less than 5.
Q14: Lisa was 6 when Lucy was 3. Lisa is 60 now. How old is Lucy?
A14: 57! Lucy is only three years younger than Lisa.
Q15: Ray works in a dog shelter. When he puts one dog in a cage, he has an extra dog left. If he puts two dogs per cage, he has an extra cage left. How many dogs and how many cages does Ray have?
A15: Three cages and four dogs.
Q16: I bought a rooster today and the salesman told me I can expect two eggs daily. How many eggs will I have in a week?
A16: None. Roosters don’t lay eggs. Only hens do.
Q17: You have a five-gallon water jug and an empty three-gallon jug. How can you measure out exactly four gallons of water?
A17: Fill the 5-gallon jug and pour the water from it into the 3-gallon jug until the latter is full. Now, you will have 2 gallons of water left in the 5-gallon jug. Empty the 3-gallon jug. Pour the 2 gallons from the 5-gallon jug into the 3-gallon jug.
Now fill the 5-gallon jug again and pour water into the 3-gallon jug until it is full. You will only be able to pour out 1 gallon of water and will have 4 gallons of water in the 5-gallon jug!
Q18: What weighs more: 16 ounces of soda or one pound of gold?
A18: Both weigh the same. 1 pound = 16 ounces.
Q19: How many times can you subtract 5 from 25?
A19: Only once. Because once you subtract 5, 25 becomes 20 (and is not 25 anymore)!
Q20: If there are 50 students in your class and you have to shake every student’s hand, how many times will you shake hands?
A20: 49. You will subtract yourself from the number of students in the class.
Q21: Arrange numbers 1 to 9 in the right order in a mathematical equation so that the result is 100.
A21: 1 + 2 + 3 + 4 + 5 + 6 + 7 + (8 x 9) = 100.
Q22: If you count 10 houses on the right while going to school and 10 houses on the left while coming back from school on the same route, how many houses did you count?
A22: 10. As the houses on the right will be on your left when you come back.
Q23: What’s the angle between the minute hand and the hour hand of a wall clock at a quarter past three?
A23: 7.5 degrees!
Q24: What number is equivalent to 3 4 /3 2 ?
Q25: Some cards are lost from a pack of cards. If I deal them among three people, two cards are left over. If I deal them among four people, three cards are left over. If I deal with five people, two cards are left over. How many cards are there in the pack?
How to Transform Math Time into Fun Time ?
Math games are a great way to engage kids in learning and help them develop important skills and concepts in a fun and interactive way. Games can also be used to review material that has already been learned or to introduce new topics.
Make Math Concepts Relevant To Children’s Lives
Gamified math lessons, such as those found in many online math games , can also provide a much-needed break from the more traditional learning environment. As students practice their calculations and hone their problem-solving skills in math , they can have fun and earn rewards along the way.
One of the best ways to make math concepts more relatable and understandable for kids is to connect them to everyday situations. When kids can see how the numbers they are working with relate to the world around them, they are more likely to grasp the concept and gain the ability to apply it in other situations.
For example, if you’re teaching addition, you can have kids add up the number of items in their lunchboxes. If you’re teaching subtraction, you can have them subtract the number of steps needed to get to school from their house.
Always Use Positive Words When Talking About Math
The language we use when talking about math can have a big impact on how kids feel about the subject. When we use negative words, such as “hard,” “difficult,” or “boring,” it can make kids feel like they’re not good at math and that it’s not worth trying to learn. It can groom them to give up easily when encountering a challenging math problem.
On the other hand, using positive words, such as “exciting,” “fun,” or “challenging,” can make kids feel more confident about their abilities and encourage them to persist when they encounter a difficult problem.
One of the best ways to help kids understand math concepts is to encourage them to explain their thinking out loud. This not only allows you to see where they are getting stuck, but it also helps them to organize their thoughts and develop a greater understanding of the concept. When kids can verbalize their math thinking, it also allows you to provide specific feedback that can help them correct any misconceptions and solidify their understanding.
Math is fun when you do not take it with unnecessary pressure. It’s full of riddles and puzzles and can even be used to play pranks on your friends! Check out our collection of math trivia questions that will stump you and may have you reaching for a calculator!
Frequently Asked Questions (FAQs)
How can i introduce my kids to math games.
There are many different types of math games, including classroom math games , online games, board games, card games, and even physical games. A math game is an interactive way to engage kids in learning and help them develop important skills and concepts in a fun and exciting way.
What are some benefits of playing math games?
Math games can provide many benefits for kids, including helping them practice important skills and concepts, introducing new topics in a fun and interactive way, and providing a much-needed break from the more traditional learning environment.
How can I make math concepts more relatable for kids?
One of the best ways to make math concepts more relatable and understandable for kids is to connect them to everyday situations. When kids can see how the numbers they are working with relate to the world around them, they are more likely to grasp the concept and be able to apply it in other situations.
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Free Math Worksheets — Over 100k free practice problems on Khan Academy
Looking for free math worksheets.
You’ve found something even better!
That’s because Khan Academy has over 100,000 free practice questions. And they’re even better than traditional math worksheets – more instantaneous, more interactive, and more fun!
Just choose your grade level or topic to get access to 100% free practice questions:
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Frequently Asked Questions about Khan Academy and Math Worksheets
Why is khan academy even better than traditional math worksheets.
Khan Academy’s 100,000+ free practice questions give instant feedback, don’t need to be graded, and don’t require a printer.
What do Khan Academy’s interactive math worksheets look like?
Here’s an example:
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Trick Questions Quiz That Only Geniuses Can Score 100%
Play this interesting Trick Questions Quiz to find out how smart you are. This quiz contains confusing brain teasers, tricky trivia, and math trick questions.
Trick Questions
What is a trick question.
A trick question is hard to answer because there is a trap in it, and usually, the obvious answer is not correct. Many people claim to be very smart and can answer any question, and do not fall into the trap of trick questions.
Common sense and knowledge do not help you answer tricky questions. Some confusing questions are amusing, some are a game about words, and some include looking at things differently. Even if some answers are rational or rely on common sense, your first thought is often incorrect.
Many people like to prove that they are brilliant at winning brain teasers. It is impossible to consider that you will nail every logic-based question, and it is even more impossible to hear all the riddles in the full sense of the word. Tricky questions will make you and your friends scratch your head and wonder how smart you are. Brain teasers and confusing questions are great for entertaining people in places like parties, the classroom, and the workplace.
There are various types of trick questions quizzes; for example, math trick questions, trick questions for kids, Mind trick questions, and funny trick questions. If you are interested in evaluating your knowledge, play one of these online quizzes .
Mind trick questions
These are other kinds of difficult questions that are challenging, even for the smartest individuals. Do not rush before you answer; you should read the questions carefully and think. Here is an example:
Example Question: A father and his son crash while driving on the road. The father dies on the way to the hospital, but his son is severely injured, and he has to have surgery. But when he’s taken to the emergency room, the doctor says I can’t operate because he’s my son. What do you think? How was this possible?
Answer: the doctor was his mother
Trick questions for kids
These are the type of funny, confusing questions. Try these little mind tricks when you get a chance with the kids in your life. Don’t worry about answering questions wrong. You will have fun hearing some questions answered incorrectly. Here is an example of trick questions for kids.
Example Question: Mr. Jones noticed that the pockets of his pants were completely empty – but there was still something there. What were?
Answer: there was a hole.
Funny Questions
Some of the hard questions are fun and entertaining, making you laugh. Especially if you answer this type of question with your friends and colleagues, you will have a great time. Ask these fun questions from your friends and coworkers, and try to guess a few before looking at the answers. Here is an example of Funny Trick Questions.
Example Question: Imagine you are in a boat and surrounded by sharks around the boat; how can you save yourself?
Answer: Stop imagining.
Math trick questions
We all deal with math problems from elementary school, and for many people, math is a big problem. While logic makes you believe that your math skills are naturally better as you age, the opposite is more likely unless you solve algebra and geometry problems daily. You’ll work for weeks for these ridiculous standard tests – but on the day of the exam, somehow, you don’t know what equations or hard math problems wanted. To solve this problem, the best solution is to play online math quizzes.
Generally, tricky questions are the best way to activate the brain and create fun. Use trick questions and brain teasers to bond with your office staff, avoid boredom and challenge your friends.
Mohsen, better known as Nix, is a full-time gaming journalist and a part-time quiz addict. As one of the earliest crew members, Nix has been exploiting his pop culture knowledge for fun quizzes since 2020. He loves making trivia and personality quizzes for the latest TV shows, movies, and anime. But he specializes in video game quizzes. His brain, in his own words, sends out an extra shot of dopamine when he has to “quizify” a newly released game.
How to Play?
A trivia quiz comes with right and wrong answers. You receive one point for each correct response—but no negatives for the incorrect ones. Take your time and read the questions carefully because some might be trick questions. Choose an option and lock it in by tapping “Next.” Lucky for you, the trivia quizzes have instant results. You see if your response was correct immediately. (Green is good, red is bad.) Even better, you can learn more about the topics with the “answer reveals,” the fun-fact snippets that appear after each question.
Questions of the quiz
It cannot be predicted
It will be sunny for the next 72 hours
It won't be sunny for the next 72 hours
Only 24 hours later is predictable
Oligodactyl
It doesn't flutter
Different Directions
Its depend on the law
None of them
The question is wrong
The place before the last
The last place
It depends on the number of competitors
All of them
None Of Them
Impossible to Guess
Kangchenjunga
Not in options
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Parents baffled by tricky math question aimed at six-year-olds - can you figure it out?
A tricky math problem meant for six-year-olds has left parents puzzled as they try to figure out the answer. The homework question was shared on a mom's Facebook page, asking to fill in the missing numbers. Her daughter Summer did just that but was told by her teacher in the US that she was wrong.
Texas mom Tiesha Sanders posted a picture of her child's first-grade math homework. The question asked the child to fill in two boxes, one labeled "tens" and the other "ones," for the number '27'. The girl logically filled the "tens" box with a two and the "ones" box with a seven.
When the answer was marked incorrect, Tiesha was confused. She reached out to the teacher for clarification, writing on the homework sheet: "Hello, I just wanted to ask how Summer got #3 wrong? Her father and I were going over her mistakes and wanted to be sure we were on the right track. The teacher wrote back: " The teacher responded: "Hello this is the new math they have us teaching." The teacher then drew a diagram of the correct answer, explaining: "It wants her to know that having two tens and seven ones is the same as 27 ones."
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The mom, who has been a primary school teacher for six years, was confused by her child's math homework and said: "This new math is NOT it." She shared the problem online, and 3700 people commented, agreeing that the question was tricky. One person wrote: "But if they have the box that labels 'tens' and 'ones' then only ask for the 'ones', how in the entire world is this math, mathing?" Someone else said the question was set up for kids to fail. Another suggested using equal signs instead of arrows to make it clearer.
This happened after another tough math question from a fifth-grade test puzzled many people. Posted on Reddit, it asked how many pages were in a book, saying: "Klein read 30 pages of a book on Monday and one-eighth of the book on Tuesday. He completed the remaining quarter of the book on Wednesday. How many pages are there in the book?"
A tricky question had many social media users scratching their heads, but a person with a PhD in engineering and a specialty in applied mathematics came to the rescue. They explained that it wasn't too hard to solve if you assumed Klein started reading on Monday. Then, divide 30 pages by five to find out what one-eighth is worth, which is six. Finally, multiply eight by six to get the answer - 48. And just like that, the puzzle is solved!
10 Math Tricks That Will Blow Your Mind
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Are you ready to give your mathematics skills a boost? These simple math tricks can help you perform calculations more quickly and easily. They also come in handy if you want to impress your teacher, parents, or friends.
Multiplying by 6
If you multiply 6 by an even number, the answer will end with the same digit. The number in the ten's place will be half of the number in the one's place.
Example: 6 x 4 = 24.
The Answer Is 2
- Think of a number.
- Multiply it by 3.
- Divide this number by 3.
- Subtract the number from Step 1 from the answer in Step 4.
The answer is 2.
Same Three-Digit Number
- Think of any three-digit number in which each of the digits is the same. Examples include 333, 666, 777, and 999.
- Add up the digits.
- Divide the three-digit number by the answer in Step 2.
The answer is 37.
Six Digits Become Three
- Take any three-digit number and write it twice to make a six-digit number. Examples include 371371 or 552552.
- Divide the number by 7.
- Divide it by 11.
- Divide it by 13.
The order in which you do the division is unimportant!
The answer is the three-digit number.
Examples: 371371 gives you 371 or 552552 gives you 552.
- A related trick is to take any three-digit number.
- Multiply it by 7, 11, and 13.
The result will be a six-digit number that repeats the three-digit number.
Example: 456 becomes 456456.
The 11 Rule
This is a quick way to multiply two-digit numbers by 11 in your head.
- Separate the two digits in your mind.
- Add the two digits together.
- Place the number from Step 2 between the two digits. If the number from Step 2 is greater than 9, put the one's digit in the space and carry the ten's digit.
Examples: 72 x 11 = 792.
57 x 11 = 5 _ 7, but 5 + 7 = 12, so put 2 in the space and add the 1 to the 5 to get 627
Memorizing Pi
To remember the first seven digits of pi , count the number of letters in each word of the sentence:
"How I wish I could calculate pi."
This becomes 3.141592.
Contains the Digits 1, 2, 4, 5, 7, 8
- Select a number from 1 to 6.
- Multiply the number by 9.
- Multiply it by 111.
- Multiply it by 1001.
- Divide the answer by 7.
The number will contain the digits 1, 2, 4, 5, 7, and 8.
Example: The number 6 yields the answer 714285.
Multiply Large Numbers in Your Head
To easily multiply two double-digit numbers, use their distance from 100 to simplify the math:
- Subtract each number from 100.
- Add these values together.
- 100 minus this number is the first part of the answer.
- Multiply the digits from Step 1 to get the second part of the answer.
Super Simple Divisibility Rules
You've got 210 pieces of pizza and want to know whether or not you can split them evenly within your group. Rather than whip out the calculator, use these simple shortcuts to do the math in your head:
- Divisible by 2 if the last digit is a multiple of 2 (210).
- Divisible by 3 if the sum of the digits is divisible by 3 (522 because the digits add up to 9, which is divisible by 3).
- Divisible by 4 if the last two digits are divisible by 4 (2540 because 40 is divisible by 4).
- Divisible by 5 if the last digit is 0 or 5 (9905).
- Divisible by 6 if it passes the rules for both 2 and 3 (408).
- Divisible by 9 if the sum of the digits is divisible by 9 (6390 since 6 + 3 + 9 + 0 = 18, which is divisible by 9).
- Divisible by 10 if the number ends in a 0 (8910).
- Divisible by 12 if the rules for divisibility by 3 and 4 apply.
Example: The 210 slices of pizza may be evenly distributed into groups of 2, 3, 5, 6, 10.
Finger Multiplication Tables
Everyone knows you can count on your fingers. Did you realize you can use them for multiplication? A simple way to do the "9" multiplication table is to place both hands in front of you with fingers and thumbs extended. To multiply 9 by a number, fold down that number finger, counting from the left.
Examples: To multiply 9 by 5, fold down the fifth finger from the left. Count fingers on either side of the "fold" to get the answer. In this case, the answer is 45.
To multiply 9 times 6, fold down the sixth finger, giving an answer of 54.
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- How to Calculate Backgammon Probabilities
- A Lesson Plan for Teaching Three-Digit Place Value
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- Will You Solve These 15 Tricky Problems?
This time we've shown little mercy at getting you some very creative and tricky math problems to solve...
- 15 Easy to Challenging Algebra Problems
Welcome to our Algebra test! You will be given 15 questions with some algebra problems on them. You'll also have 15 minutes to complete the test.
- Solve 15 Fun Questions in 20 Minutes!
Can you do these basic math questions in time?
Can You Solve These 15 Math Questions?
This test has a bit of everything, and will require you to recall some of your school-day math skills. Good luck!
This Is One of the Trickiest Math Tests!
Can any of you get more than 10 out of these 12 tricky math questions?
Practice Your Algebra and Your Mind...
We believe that with a little thought anyone can beat this test, but you may need to focus to beat all 15 questions!
The Math Creature Challenge!
Can you satisfy these mysterious Math creatures and their questions?
Are You Ready For This Logical Challenge?
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Can You Solve These 12 Tricky Problems?
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Can You Beat These 12 Tricky Questions?
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12 Problems Await to Challenge You!
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Short IQ Test
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Math Riddles: Tricky Math Puzzles, Test Your IQ and Aptitude
Math riddles challenge: can you solve these tricky math puzzles in 20 seconds each.
Math Riddles are so challenging, but that makes them worthwhile to solve. Math riddles are logical problems that require strong analytical abilities, high IQ, knowledge of math concepts, and good calculations skills. Math riddles have also been known to make Mathematics enjoyable for kids, students, and even adults to solve. Riddles, puzzles, and brain teasers can develop strategic thinking, logical reasoning, and problem-solving skills.
Today, we bring you the most difficult Algebra Math puzzle which is all over the social media. This tricky math logic puzzle has attracted millions of answers but very few got it right.
Math Riddles: Tricky Math Logic Puzzles
Logic Puzzle #1
Logic Puzzle #2
Logic Puzzle #3
Logic Puzzle #4
Tricky Math Logic Puzzles Solution
We will start solving one set at a time.
(1 + 7) x (2 + 3) = 40
(2 + 3) x (1 + 9) = 50
(1 + 9) x (2 + 1) = 30
(2 + 1) x (3 + 1) = 12
(4 + 0) x (5 + 0) = 20
(3 + 0) x (1 + 2) = 9
Now, we will solve to find the value of X.
(5 + 0) x (3 + 0) = X
We notice that the cross in each image is moving one place clockwise and the grey dot is also moving one place clockwise.
Also, if you notice that color sequence of the image series is black, then white, then black. Hence, by that logic, the image in the place of the question mark would be white.
This helps in eliminating the options a, b, c. Therefore, we are left with one option D.
Answer: 120
If we put the sequence in sets of 2 each, then the set would look like:
(0, 1), (1,1), (2, 2), (3, 6), (4, 24), (5, ??)
In each set, the factorial of first number is second number.
Factorial of (0,1) is 1.
Factorial of (1,1) is 1.
Factorial of (2,2) is 2.
Factorial of (3,6) is 6.
Factorial of (4,24) is 24.
Factorial of (5, ??) will be 120
Tell us in comments: Did you solve these Tricky Math Puzzles correctly in 20 seconds each?
Check out more math puzzles!
Also Read: Math Riddles: Most Difficult Algebra Math Puzzle, Check Your IQ
Also Read: Math Riddles: Missing Number Series Puzzles, Difficulty Level Hard
Also Read: Math Riddles: Hard Logic Puzzles, Only Genius Can Solve in 20 Seconds
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Math riddles can be tricky problems with challenging solutions. These application based questions help your child think out of the box. They will help your kids improve their IQ and academic performance. ... Sit with your child while solving math riddles to assess problem-solving ability. Share hints to help them solve most of the riddles ...
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Can You Solve These 12 Tricky Problems? Welcome to another BabaMail math quiz that has 12 math problems for you to solve. Shai K. 3/24/2020 Join Us Share Send to friends Welcome to another BabaMail math quiz! We have some really creative problems for you to solve, 12 in number, and increasing in difficulty.
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The following questions will challenge you in a variety of areas related to knowledge as well as computational and logical abilities. Subjects like Math and Geometry are considered the most difficult and challenging in the eyes of many, but if you think your mind is strong enough to deal with these fields, you have come to the right place! The ...
Welcome to another challenging math quiz. This time we've shown little mercy at getting you some very creative and tricky math problems to solve. Take your time and think it over carefully, we hope you can do math in your head! There are 15 questions and they get harder as you proceed... 1 of 15. A snail is at the bottom of a 20 foot deep pit.
QuickMath will automatically answer the most common problems in algebra, equations and calculus faced by high-school and college students. The algebra section allows you to expand, factor or simplify virtually any expression you choose. It also has commands for splitting fractions into partial fractions, combining several fractions into one and ...
Sep 29, 2022, 18:58 IST. Math Riddles: Tricky Math Puzzles, Test Your IQ and Aptitude. Math Riddles are so challenging, but that makes them worthwhile to solve. Math riddles are logical problems ...