Math Riddles

These Math Riddles are based on math concepts and can be solved with a bit of math and logic. These fun riddles can surely give you a tough time.

25 Coins to Make a Dollar

I have 25 coins that are made up of dimes (10¢), nickels (5¢) and pennies (1¢). They add up to a dollar. How many coins of each do I have?

Riddle Answer

1 Meter High

You have a rope that will reach around the earth (+/- 40,000 km). If you put sticks of 1 meter high around the world and lay the rope on these sticks, how much longer will the rope need to be?

Riddle Answer

Car Profit

John bought a used car for $600 and sold it to Mary for $800. He later bought it back for $1000 and resold it for $1200. How much profit did John make?

Riddle Answer

Send + More = Money

Each letter in the below equation stands for a different number, and each time the same letter appears, it is the same number. What is the only set of numbers that makes this equation correct?

SEND + MORE = MONEY

Riddle Answer

Pool Balls – Sum of 30

You have 8 balls numbered 1, 3, 5, 7, 9, 11, 13 and 15. Select 3 balls and put them into the circles such that the sum of the numbers on them add up to 30.

Riddle Answer