People put me on the table and cut me but do not eat me. What am I?

What can you catch but never throw?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

What has 88 keys?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

What is at the end of a rainbow?

There is something which is always coming but never arrives?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

It belongs to you, but other people use it more than you do. What is it?