How many sides does a circle have?

I’m tall when I’m young, and I’m short when I’m old. What am I?

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

I know a nine-letter word having only one vowel.
Do you ?

Which point will the car reach to go out?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

How many letters are in the alphabet?

What has one letter and starts with an E?