There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

What is the fastest way to double your money?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Can you find a five letter word that is left with only two letters if one is removed?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

How could a baby fall out of a twenty-story building onto the ground and live?

Replace the question mark with the correct number in below Picture: