This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

How is the moon similar to a dollar?

what does the below rebus means?

When is the top of a mountain similar to a savings account?

Why do we preferably have round manhole covers and not square ones?

Find the missing number in the sequence below:

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

I have an eye but still cannot see.

Who am I?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?