What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

John was piloting a plane behind a car but was never able to overtake it. Why?

Imagine you are in a room with no windows or doors. How will you get out?

What does this mathematical rebus means ?

What part of the chicken has the most feathers?

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?