If you say my name, I will no longer exist. What am I?

From a pack of 52 cards, I placed 4 cards on the table.

I will give you 4 clues about the cards:

Clue 1: Card on left cannot be greater than the card on the right.
Clue 2: Difference between the 1st card and 3rd card is 8.
Clue 3: There is no card of an ace.
Clue 4: There are no face cards (queen, king, jacks).
Clue 5: Difference between the 2nd card and 4th card is 7.

Identify four cards?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

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?

How can you tell a raw egg from a hard-boiled egg?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

There is something which is always coming but never arrives?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

what does the below rebus means?