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.

99 Heads and Feet

A drove of sheep and chickens have a total of 99 heads and feet. There are twice as many chickens as sheep. How many of each are there?

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100 Using Six Nines

How can you express the number 100 using six nines and no other digits?

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Half of 2+2

What is half of 2+2?

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20 Percent off Sale Price

If the price off a dress was cut by 20% for a sale, by what percentage off the sale price must it be increased by to resell it at the original price?

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53 Socks

A man has 53 socks in his drawer: 21 identical blue, 15 identical black and 17 identical red. The lights are fused and he is completely in the dark. How many socks must he take out to be 100 percent certain he has a pair of black socks?

Riddle Answer