A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

A sundial has the fewest moving parts of any timepiece. Which has the most?

Can you place six X (crosses) in below board without making three in a row in any way ?

What English word has three consecutive double letters?

What's the only room from which no one can enter or leave

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

What do you answer even though it never asks you questions?

In a town, there are four houses located at different distances from each other. Following are the distances:

The third house is 60 meters apart from the first house.
The fourth house is 40 meters apart from the second house.
The third house is 10 meters nearer to the fourth house than it is to the second house.

Can you find out the distance between the fourth and the first house?