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.

10 Years Older than My Sister

I am ten years older than my sister. There was a time when I was three times older than she was, and in one year I will be twice as old as she is. What is my age now?

Riddle Answer

Look and Say

What is the next number in the sequence?
1
11
21
1211
111221
312211
13112221

Riddle Answer

Books on a Bookshelf

There are several books on a bookshelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

Riddle Answer

End of the World on a Sunday

If the end of the world should come on the first day of a new century, can you say what are the chances that it will happen on a Sunday?

Riddle Answer