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

What is the riddle which can be asked all day with a different correct answer each time.

What has no start, end, or centre?

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

I have eight fingers and two thumbs but I do not live. What Am I?

You see me once in June, twice in November, and not at all in May. What am I?

Take away the whole and some still remain. What is it?

What is at the end of a rainbow?

There are 3 apples in the basket and you take away 2. How many apples do you have now?