Replace the question mark with the correct number below.

What has a ring but no finger?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?

What has lots of eyes, but can’t see?

Jack and Joseph are well-known golf rivals. One Day during a match, they were level at a score of 30. Jack hit a bad shot and Joseph added 10 to his score. Joseph then hit an awesome shot and he won the game.

How ?

Find the missing letter in the last circle logically in the given below picture.

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?