I have teeth but i don't bite. Who Am I ?

A man is trapped in a room. The room has only two possible exits doors. Through the first door there is a room constructed from magnifying glass. The blazing hot sun instantly fries anything or anyone that enters. Through the second door there is a fire-breathing dragon. How does the man escape?

What has hands, but can’t clap?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

My location can be determined by the below rebus.
So where am i ?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?