How can you leave a room with two legs and return with six legs?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

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

The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

A man is lying dead in a field where no one is around. His head is split open and his legs are disfigured. Near to him, there is an unopened package. No living organism can be found anywhere at the crime scene.

How did he die?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?