How can a man go eight days without sleep?

What is the end of everything?

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

What is the word or phrase below?
R | E | A | D

Can you move 2 matchsticks to form four equal sized squares.

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?

What's the only room from which no one can enter or leave

What's a single-digit number with no value?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

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

When did John make this statement?