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

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

Find the value of "?" in the ball picture Riddle below:

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

A pack of cards has 40 cards. You are blindfolded. Out of 40, 25 cards are facing down while 15 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face-up cards. Remember, you are blindfolded.

How will you do it?

Solve the puzzle by telling what does below picture means.