Which number should replace the question mark?

What does an Island and the letter T have in common?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

What number when divided in half becomes zero?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

A fresher was sitting in an interview. The interviewer said, "This is the last question of your interview. Tell me the accurate position of the centre of this table where your resume is kept."

How can he answer this question? What will you have answered to such a question?

Can you arrange the six given marbles in a manner that each one of them is touching all four marbles of different colours?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?