A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside.
The man said, "Oh! I am really sorry, I thought this was my room."
He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man.
What made her suspicious of that man? He might have been genuinely mistaken.

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

Why Aeroplane windows are round?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

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

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Why is the longest human nose just 11 inches?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

How many triangles can you find in this given picture?