what does this below rebus represent identXQQQQQME

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

How many Watermelons are there in the below picture?

How can one talk without saying a single word?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

I can be made.
I can be cracked.
I can be told.
I can be played.

Who am I?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

While handling a project, the landscaper is asked by the owner of the mansion that he wants four trees in front of his mansion that are exactly equidistant from each other.

How will he do it?

No matter how little or how much you use me, you change me every month. What am I?