A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

A detective visits his friend John just to discover that John's neighbour Dr Jacob was murdered. Dr Jacob, who is a mathematician wrote the murderer's name in a code word "Hcqtfz". There were five suspects
1. Ajit
2. Pankaj
3. Ganpat
4. Deenu
5. Hariya

The Detective was instantly able to find the murderer.
Can you?

Prove that twice of ten is the same as twice of eleven.

Why did Navjot Singh Sidhu put the new January calendar in the freezer

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

If a wheel has 54 spokes, how many spaces are there between the spokes?

Forwards I am heavy, backward I am not. What am I?

What is the relationship between these matchstick pictures below?

What word is pronounced the same if you take away four of its five letters?