There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

What has to be broken before you can use it?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

You need to remove two matchsticks to make the below equation true. Can you do it ?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

What is black when you buy it, red when you use it, and gray when you throw it away?

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?

There are 2 cops parked along a one-way street looking for traffic violations. They spot a taxi driver going in the wrong direction, yet they do nothing.

Why?