What does this mathematical rebus means ?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

Replace the question mark in the picture below.

A man is found unconscious in front of a store at two in the morning. His head is bleeding and there’s a brick laying next to him. When the police arrive, they carry the man to jail. Why did they arrest him?

Can you count the number of quadrilaterals in the picture below?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

What brings you down but never up?

What occurs twice in a week, once in a year but never in a day?

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