What does this below rebus puzzle mean?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

Why do people go to bed?

Solve the following series:
AZ, GT, MN, __, YB

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?

When 99 is considered higher than 100?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.