If eleven plus two equals one, what does nine plus five equal?

What is always in front of you but can’t be seen?

How many times can you subtract the number two from the number fifty?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

What do you think with the below Picture ?

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

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

What Adam and Eve do not have but the rest of the people have?