what does the below rebus means?

If eleven plus two equals one, what does nine plus five equal?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

Why is the Hole below a Lock?

Why is it against the law for a man living in Delhi to be buried in Mumbai?

What does below rebus means ?

Who has married many women but was never married?

Can you find out the missing number in the grid?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?