I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

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

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

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 time is it when an elephant sits on a fence?

Prove that the below maths equation is true.

8 + 8 = 91

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

A bomb exploded in a room full of married couples and no one died. How?