The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

What does this Rebus Picture means ?

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

This is a simple one. You just have to count the number of Fs in the given sentence.

Finished Files are the result of years of scientific study combined with the experience of years.

How many did you count?

Find the value of "?" in the ball picture Riddle below:

Take one out and scratch my head, I am now black but once was red. What am I?

What has one eye, but can’t see?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

No matter how little or how much you use me, you change me every month. What am I?