John was piloting a plane behind a car but was never able to overtake it. Why?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?

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?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

What's a single-digit number with no value?

How do you go from 98 to 720 using just one letter?

Using Only Five 5's and any mathematical operator make sum as 37

Can you find out the remainder when 3^300 is divided by 5?

How can one talk without saying a single word?