Replace the question mark with the correct number.

There are forty elephants and they have forty-fore heads. How can this be possible?

A thief is convicted in Mexico. He gets the death penalty. The judge allows him to say the last sentence to determine how the penalty will be carried out. If the thief lies, he will be hanged, if he speaks the truth he will be beheaded. The thief tells the last sentence and to everybody's surprise some minutes later he is set free because the judge cannot determine his penalty. What did the thief say?

Akbar summoned Birbal out of anger.
He told him that he will have to face death.
He asked him to make a statement and if the statement is true he will be buried alive and if the statement is false, he will be thrown at lions.
After hearing Birbal’s statement, Akbar could do nothing but smile.
He gave him 5 gold bars and let him go.

What did Birbal say?

The more it dries, the wetter it becomes. Can you tell what it is?

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

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?