How intelligent you are?

So guys want to know how intelligent you are, just solve the question.

It comes in the CSS exams but many people failed to answer lets see what can you do.

The question has a small trick you have to capture, there is nothing else so don’t be confused just focus on what it says and apply the mathematics rules you will get the success. Many people are in hurry so they make a mistake and failed to answer correctly so read it patiently then everything will be clear and easy.