A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

You walk into an old horror house. It has no power or plumbing. Once inside, you see three doors. Each door has a number on it. Behind each door is a way for you to die. Behind door number one, you die by getting eaten by a lion. Behind door number two, you die by getting murdered. Behind door number three, you die by an electric chair. You can’t turn back, so you have to go through a door. Which door do you go through?

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

Which number should replace the question mark?

What do you see in the image below

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

What is the centre of gravity?

What can jump higher than a building?

Can you find a number that lies one third of the distance between 1/3 and 2/3?