### Fun Facts (Hints)

Math is a part of our lives in almost every way. Check out these interesting facts about math that show why it's the "universal language":
The mathematical tool, the wheel, is believed to be first used around 3000 BC.
3000 BC is also the period in which the Ancient Egyptians started using numerals. As evidenced in their hieroglyphics.
Fahrenheit invented his thermometer in 1718. Thermometers are mathematical tools used to measure temperature, and of course are still used widely present-day.
The first evidence of counting dates back more than 52,000 years and is attributed to the Neanderthal man.
Galileo one of the most famous mathematicians, was born in 1564.

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Riddles and Answers © 2020

Located on this page are some very easy math questions in the form of riddle, and some very thought-provoking math riddles to complete as well. To solve them most advantageously you must read through the problem and try to think about them in as many different ways that you can force your mind to. This is where the mental exercise and brain development starts to kick in!

Think you're ready to take on these challenging math puzzles? The newest problems are at the top, and the solutions to each problem are below the questions.

Also, math buffs remember to check back here frequently for the new and engaging mathematical puzzles we add on a regular basis.

## Circle With 5 In The Middle Riddle

Hint:

## How Many 7s Are Between 0 100 Riddle

Hint:

The answer is 20

7, 17, 27, 37, 47, 57 ,67, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 87, 97

YES NO

7, 17, 27, 37, 47, 57 ,67, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 87, 97

*Did you answer this riddle correctly?*YES NO

## If A Door Number Fitter Riddle

In a new hotel containing 100 rooms, Tom was hired to paint the numbers from 1-100 on the doors. How many times will Tom have to paint the number 8?

Hint:

The answer is 20. Many people have been guessing anywhere from 9 to 19, but the correct answer is 20.

YES NO

*Did you answer this riddle correctly?*YES NO

## How Many 9 In 100 Riddle

Hint:

There are total 20 nine's between 1 and 100. 9, 19, 29, 39, 49, 59, 69, 79, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99. you can count total 9 in these series.

YES NO

*Did you answer this riddle correctly?*YES NO

## Eye Test How Many 3s Riddle

Hint:

The answers for 'eye test how many 3s' puzzle ranges from 15 to 21. At first glance, most people only notice 15 threes in the image. First, you might notice that there are two threes on the number pad, as the number eight has also been replaced by a three. Then there are eight threes in the phone number. Many also notice that the battery charge is at 33% and the time is 3:33 PM.

However, if one looks closer at the name underneath the phone number, they will find three more 3s. This gives a total of 18 3s in the image. But there is one more hidden three that even observant people fail to notice. Underneath the number four on the keypad, the letter 'I' has been replaced with three as well. So, the total number of 3s in the image is 19.

However, depending on your interpretation of the puzzle, the number of 3s can also rise to 21. At the top left of the image, the bar signal and wifi signal also have three bars. Some people also consider the two signals to be a part of the riddle and raise the number of 3s to 21. So, the correct answer can be 19 or 21, depending on your interpretation of the question.

YES NO

However, if one looks closer at the name underneath the phone number, they will find three more 3s. This gives a total of 18 3s in the image. But there is one more hidden three that even observant people fail to notice. Underneath the number four on the keypad, the letter 'I' has been replaced with three as well. So, the total number of 3s in the image is 19.

However, depending on your interpretation of the puzzle, the number of 3s can also rise to 21. At the top left of the image, the bar signal and wifi signal also have three bars. Some people also consider the two signals to be a part of the riddle and raise the number of 3s to 21. So, the correct answer can be 19 or 21, depending on your interpretation of the question.

*Did you answer this riddle correctly?*YES NO

## If You Have 3 You Have 3 Riddle

If you have three, you have three. If you have two, you have two but if you have one, you have none. What is it?

Hint:

The answer is Choices. If you have 3 choices, you have 3 choices. If you have 2 choices you have 2 choices. If you have only 1 choice, you don't have a choice.

YES NO

*Did you answer this riddle correctly?*YES NO

## Blank One Two Three Riddle

Hint:

## Two Zero And Two Four Riddle

Hint:

B) 2024

When you pronounce a number say, 3006, it is pronounced as three thousand six. But, it is not pronounced as three two zero and six. Because, it will result in 3206. It might be grammatically but mathematically wrong or vice versa.

The pronunciation does not say how many but what the number is at the particular position.

Hence, 2024 has two zero and two four.

YES NO

When you pronounce a number say, 3006, it is pronounced as three thousand six. But, it is not pronounced as three two zero and six. Because, it will result in 3206. It might be grammatically but mathematically wrong or vice versa.

The pronunciation does not say how many but what the number is at the particular position.

Hence, 2024 has two zero and two four.

*Did you answer this riddle correctly?*YES NO

## 20 Plus 20 Plus 20 Riddle

Hint:

## Turn Me On My Side And I Am Everything Riddle

Hint:

The number 8. On its side, the number 8 looks like an infinity symbol. Cut in half, the number 8 becomes two zeros.

YES NO

*Did you answer this riddle correctly?*YES NO

## 16 06 68 Riddle

Hint:

Answer: 87

Explanation:

If you look at the upside down you will see that the series is actually

86, 87, 88, 89, 90, 91

So the answer is 87.

YES NO

Explanation:

If you look at the upside down you will see that the series is actually

86, 87, 88, 89, 90, 91

So the answer is 87.

*Did you answer this riddle correctly?*YES NO

## You Start With 1000 Riddle

You start with 1000 then add 40 add another 1000 then add 30 add another 1000 then add 20 add one more 1000 then add 10 what is your answer?

Hint:

If you said 5000 you're wrong! The answer is 4100, how?

1000 + 40 = 1040

1040 + 1000 + 30 = 2070

2070 + 1000 + 20 = 3090

3090 + 1000 = 4090

4090 + 10 = 4100

YES NO

1000 + 40 = 1040

1040 + 1000 + 30 = 2070

2070 + 1000 + 20 = 3090

3090 + 1000 = 4090

4090 + 10 = 4100

*Did you answer this riddle correctly?*YES NO

## A Dash At 20 And A Dot At 60

Hint: It's not a clock.

## Find Those Missing Numbers Riddle

In the attached figure, you can find two missing numbers. Can you analyze the pattern and find those missing numbers?

Hint:

The number missing on the left is 8 and the one on right is 7.

Explanation:

The pattern:

The number in the center of triangle is the square root of the sum of the numbers sitting outside on the corners.

Thus,

10 + 22 + 4 = 36

Square Root of 36 = 6

In the same manner:

10 + 42 + 12 = 64

Square Root of 64 = 8

12 + 22 + 15 = 49

Square Root of 49 = 7

YES NO

Explanation:

The pattern:

The number in the center of triangle is the square root of the sum of the numbers sitting outside on the corners.

Thus,

10 + 22 + 4 = 36

Square Root of 36 = 6

In the same manner:

10 + 42 + 12 = 64

Square Root of 64 = 8

12 + 22 + 15 = 49

Square Root of 49 = 7

*Did you answer this riddle correctly?*YES NO

## The Correct Number Riddle

Hint:

121

Explanation

Tables consist of squares of the number from 4 to 12.

11^2 = 121.

YES NO

Explanation

Tables consist of squares of the number from 4 to 12.

11^2 = 121.

*Did you answer this riddle correctly?*YES NO

## Post Your Number Riddles Below

Can you come up with a cool, funny or clever Number Riddles of your own? Post it below (without the answer) to see if you can stump our users.