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?

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

Count the number of balls in picture below:

What you cannot hold but it is yours?

10+10 and 11+11 can give you the same answer.

Explain how?

What is harder to catch the faster you run?