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

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

A man is looking at a photograph of someone. His friend asks who it is. The man replies, “Brothers and sisters, I have none. But that man’s father is my father’s son.” Who was in the photograph?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

Can you find the dog hidden in a group of pandas?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.