Can you replace the question mark with the correct number?

what does this below rebus represent identXQQQQQME

How can you make number one disappear by adding something to it?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

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

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

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?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What is the last thing you take off before bed?