why number 8549176320 is one of a kind?

I have feet, but no legs. Which animal Am I?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

Wednesday, Steve and Pam go to a restaurant to eat lunch. After eating lunch, they pay the bill. But Steve and Pam do not pay the bill. So…who does?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

Can you solve the below rebus?

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

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?