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

Explain how?

Name a key which is hardest to turn.

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

During which month do people sleep the least?

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?

The more it dries, the wetter it becomes. Can you tell what it is?

Why are televisions attracted to people?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

There is something which you can be arrested for attempting but not for successfully completing.

A lion and its tamer are standing inside a cage that measures 1 unit in radius. Both of them can effortlessly run at the speed of 1 unit maximum.

1) Suppose the lion is hungry, will he be able to eat up the tamer?
2) If yes, how long can the tamer survive?