It is always ahead of me yet I can never see it. What is it?

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

Explain how?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

What does a man do only once in his lifetime, but women do once a year after they are 29?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

In the picture given below, can you find out which digit will take place of the question mark?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

What has one eye, but can’t see?

Why is the Hole below a Lock?