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### Math Riddles

Top 10 Math Riddles

Math Riddles 1 : Hard Math Riddle
Difficulty ★★★★☆     Popularity ★★★★★

Take 9 from 6, 10 from 9, 50 from 40 and leave 6.

How Come ??

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Math Riddles 2 : Probability Riddle Loaded Revolver
Difficulty ★★☆☆☆     Popularity ★★★★★

Henry has been caught stealing cattle, and is brought into town for justice. The judge is his ex-wife Gretchen, who wants to show him some sympathy, but the law clearly calls for two shots to be taken at Henry from close range. To make things a little better for Henry, Gretchen tells him she will place two bullets into a six-chambered revolver in successive order. She will spin the chamber, close it, and take one shot. If Henry is still alive, she will then either take another shot, or spin the chamber again before shooting.

Henry is a bit incredulous that his own ex-wife would carry out the punishment, and a bit sad that she was always such a rule follower. He steels himself as Gretchen loads the chambers, spins the revolver, and pulls the trigger. Whew! It was blank. Then Gretchen asks, 'Do you want me to pull the trigger again, or should I spin the chamber a second time before pulling the trigger?'

What should Henry choose?

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Math Riddles 3 : Funny Answer to This Riddle
Difficulty ★★☆☆☆     Popularity ★★★★☆

Right now Mum is 21 years older then her child In 6 years her child will be 5 times younger than she. Where is daddy?

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Math Riddles 4 : Professor Riddle
Difficulty ★★★☆☆     Popularity ★★★★☆

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Neither do I know your number.
A: Now I know.

There are four solution for this.What are they ??

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Math Riddles 5 : CAT Exam Puzzle
Difficulty ★★★☆☆     Popularity ★★★☆☆

5+3+2 = 151022
9+2+4 = 183652
8+6+3 = 482466
5+4+5 = 202541
THEN ;
7+2+5 =

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Math Riddles 6 : Interesting Number puzzle
Difficulty ★★★☆☆     Popularity ★★★☆☆

A number with an interesting property:

When I divide it by 2, the remainder is 1.
When I divide it by 3, the remainder is 2.
When I divide it by 4, the remainder is 3.
When I divide it by 5, the remainder is 4.
When I divide it by 6, the remainder is 5.
When I divide it by 7, the remainder is 6.
When I divide it by 8, the remainder is 7.
When I divide it by 9, the remainder is 8.
When I divide it by 10, the remainder is 9.

It's not a small number, but it's not really big, either.
When I looked for a smaller number with this property I couldn't find one.

Can you find it?

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Math Riddles 7 : Equation Puzzle
Difficulty ★★☆☆☆     Popularity ★★★☆☆

Replace the 'X' by any mathematical symbol to make the expression equal to 99.

18 X 12 X 2 X 3 = 111

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Math Riddles 8 : Friday The 13th Riddle
Difficulty ★★★★☆     Popularity ★★★☆☆

Many people would think Friday the 13th will be an unlucky day. Is it possible that there is no Friday on 13th through the whole year? How many Fridays at 13th can we have in a year at most? Can you calculate it out?

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Math Riddles 9 : Number Trick Riddle
Difficulty ★★☆☆☆     Popularity ★★★☆☆

Sonal asked the class to see if they could find the sum of the first 50 odd numbers. As everyone settled down to their addition, Lavesh ran to her and said, 'The sum is 2,500.' Ms. Sonal thought, 'Lucky guess,' and gave him the task of finding the sum of the first 75 odd numbers. Within 20 seconds, Lavesh was back with the correct answer

How does Lavesh find the sum so quickly and what is the answer ??

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Math Riddles 10 : Maths Teaser
Difficulty ★★☆☆☆     Popularity ★★☆☆☆

Try to find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times

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Last Updated:2011-09-16

1. really hard riddle

2. it's so hard

:)

3. it was help to me

4. it's soooooooooo! hard please vote me too

5. thankkkkkkkk uuuuuuuuuuuuuuuu

6. thankkkkkkkk uuuuuuuuuuuuuuuuu its so coooooolll wow

7. its so educational

8. it is so interesting

9. Wow. These are awwesome riddles and TRICKY

10. very interesting and very harddddddddd

11. reaallly very hard riddles sur ko ghuma dene wale

12. i have a number. i halve it and i am left with nothing at all. if the original number wasn't 0 how can this be possible?