Replace the question mark with the number below given a simple math problem.

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

One night, a woman receives a call from the police. They tell her that her husband was murdered and that she should come to the crime scene as soon as possible. The woman drops the phone, shocked, and drives 20 minutes to the crime scene. As soon as she reaches the crime scene, the police arrest her and she is convicted of murder. How do the police know she committed the crime?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

What do you think with the below Picture ?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

In a family supper, a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one daughter-in-law, and one mother-in-law need to sit at a table.

There are only seven chairs available at the place. How many more chairs do they have to borrow so that everyone can sit down together for the suppers if everybody requires a separate chair?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Jack and Joseph are well-known golf rivals. One Day during a match, they were level at a score of 30. Jack hit a bad shot and Joseph added 10 to his score. Joseph then hit an awesome shot and he won the game.

How ?