I make two people out of one. What am I?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

I cannot talk, but I always reply when spoken to. What am I?

What will you call your mother's brother's brother-in-law?

Our product and our sum always give the same answer. Who are we?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?