Before Mount Everest was discovered, what was the highest mountain in the world?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Find the next number in the series below

21 32 54 87 131 ?

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

A man is found unconscious in front of a store at two in the morning. His head is bleeding and there’s a brick laying next to him. When the police arrive, they carry the man to jail. Why did they arrest him?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

what's the probability of getting a king or a queen from a pack of 52 cards?

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?