I have branches, but no fruit, trunk or leaves. What am I?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

Can it be possible to build a house that has all its four walls facing towards the South?

There is something which you can be arrested for attempting but not for successfully completing.

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?

I look at you, you look at me I raise my right, you raise your left. What am I?

People make me, save me, change me, raise me. What am I?