In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

How can a man go eight days without sleep?

What always comes into a house through the keyhole?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Who is that with a neck and no head, two arms and no hands? What is it?

What is the longest word in the dictionary?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?