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?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

I add 5 to 9 and get 2. The answer is correct, so what am I?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

When we see 2 but call 10?

Which digit occurred maximum times between the number 1 and 1000?

I have no life, but I can die. What am I?

A and B have a certain number of chocolates with them. If B gives one chocolate to A, they will have an equal number of chocolates. But if A gives one chocolate to B, then A will be left with half the number of chocolates that B has.

Can you find out the number of chocolates they have right now?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?