What can you catch but never throw?

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

What does this simple rebus mean?

People put me on the table and cut me but do not eat me. What am I?

Can you solve the below tricky visual equation?

You can see it everyday, But cannot touch it at will. What is it?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

If 21x = 79x, what is the value of x?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

Kohli and Dhoni decided to have a paintball match.
Kohli told Dhoni, "Sir it is not right as you got thrice the paintballs I have".

Dhoni instantly gives Kohli 10 hit paintballs.
Kohli replied, "Sir, I believe you still have twice the paintballs than I have".

Dhoni gives "?" more paintballs to Kohli.
Kohli replied, "Sir it is even now, Let us have a match".

What is "?".