Count the squares in the matchstick puzzle below?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

Here is a conversation between a couple who both are software professionals.

Husband: Hey! What is your date of birth?
Wife Replied Angrily: It is 591062400
Husband after doing some calculations replied, "Got It".

What is the DOB of the wife?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

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

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Replace the question mark with the correct number in the below-given picture?

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

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?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?