By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

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

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

Count the squares in the matchstick puzzle below?

Can you count the number of triangles in the given picture?

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.