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.

What number should come in place of the question mark below?

Forwards I am heavy, backward I am not. What am I?

Can you fill the blank with the correct number?

6 30 870 756030 _____

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

Prove that the below maths equation is true.

8 + 8 = 91

What is the longest word in the dictionary?

Which tank will fill first?