You knock a Table over in the library, and suddenly 20 eyes are looking at you.

In which direction should the missing arrow point?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

What's a single-digit number with no value?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

Can you count the number of squares in the given picture?

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?

Which tank will fill first?