When my father was 31 I was 8. Now he is twice as old as me. How old am I?

What has to be broken before you can use it?

Which point will the car reach to go out?

What has one letter and starts with an E?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

What has many keys but can’t open a single lock?

Can you solve this picture maths equation?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?