A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

All of you like to eat me. I am a five-lettered word. Remove the first two and I turn into an infamous animal. Remove just the first and I become a heinous crime. Remove the first and the last and you can groove on me.

Can you guess who am I?

While handling a project, the landscaper is asked by the owner of the mansion that he wants four trees in front of his mansion that are exactly equidistant from each other.

How will he do it?

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?

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?

Which wheel of car does not rotate when you turn your car right?

You can see it everyday, But cannot touch it at will. What is it?

What has many teeth, but cannot bite?

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?