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.

Two Water Lilies

Water lilies grow extremely rapidly. In one pond, a water lily grew so fast that each day it covered a surface area double that of the area it had covered the previous day. At the end of the 30th day, it had covered the pond entirely. How long do you think it will take for two such water lilies to cover the whole pond?

Riddle Answer

Cycle to Gradmother’s House

Last week Tom decided to cycle to his grandmother’s house.

On the first day, he cycled half of the distance.
On day 2, he cycled one half of the remaining distance.
On day 3, he cycled three quarters of the remaining distance.
On day 4, he cycled 10 miles.
On day 5, he cycled two thirds of the remaining distance and on the final day he cycled the remaining 5 miles.

How far is it to his grandmother’s house?

Riddle Answer