The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

I cannot talk, but I always reply when spoken to. What am I?

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? What is it?

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

Our product and our sum always give the same answer. Who are we?

There is a bag which have 21 blue balls and 23 red balls. You also have 22 red balls outside the bag. Randomly remove two balls from the bag. * If they are of different colors, put the blue one back in the bag. * If they are the same colour, take them out and put a red ball back in the bag. Repeat this until only one ball remains in the bag. What is the color of the sole ball left in the bag ?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

There is something which is always coming but never arrives?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day