It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

In a university, a professor gave a set of three problems to the three brilliant students of his class. See the image for the questions.

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

You bought me for dinner but never eat me. What am I?

Spot what is wrong here in below Picture?

Can you arrange the six given marbles in a manner that each one of them is touching all four marbles of different colours?

If eleven plus two equals one, what does nine plus five equal?

A B C D E F G H

These are the letters given to you. Now you have to find out the letter that comes two to the right of the letter which is immediately to the left of the letter that comes three to the right of the letter that comes midway between the letter two to the left of the letter C and the letter immediately to the right of the letter F.

What number when divided in half becomes zero?

I look at you, you look at me, I raise my right, you raise your left. What am I?