There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

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

This is the oldest riddle that I have heard.

Once there was a man who was travelling with a Tiger, goat and grass.
He needs to cross a river that can carry a maximum of two i.e. Man + one of Tiger goat or grass. But the problem is "If he takes the lion with him, the goat will eat grass and if he takes grass with him, the lion will eat the goat".

How can he ensure the safe delivery of all three?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

I cannot talk, but I always reply when spoken to. What am I?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

Can you find the number of triangles in the given figure?

Which number should replace the question mark?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?