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.

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Count the squares in the matchstick puzzle below?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

What type of tree can I carry in my hand?

10+10 and 11+11 can give you the same answer.

Explain how?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Can you find a number that lies one third of the distance between 1/3 and 2/3?