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

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

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

How Come ??

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

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.

I have an apple tree , number of apple in this tree get doubles every week.

On 30th week , the tree gets completely filled with apples :-)



Can you tell me , on what week does my tree is half covered with apples ?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?