There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

A man had five children. He had $100 with him to give to his children. He decided to start with the youngest child and then give $2 more than each younger child to his next elder child.

For example, if he gives $x to the youngest child, he will give $(x+2) to the next one, $[(x+2) + 2] to the next one and so on.

Can you find out how much did the youngest one receive?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

You can see three almost identical images below. Can you spot the odd one out from them?

If 21x = 79x, what is the value of x?

I have teeth but i don't bite. Who Am I ?

What has one eye, but can’t see?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Who has married many women but was never married?