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?

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

How many words can a pen with half refill write?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

What is common among 11, 69, and 88?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

It belongs to you, but other people use it more than you do. What is it?

Can you find out the remainder when 3^300 is divided by 5?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

A dying old man wants to divide his entire land between his only two sons. Since his only wish is to treat them as equal as both of them have been too good to him, he wants to divide his land equally between them. The problem is that the land is significantly irregular in shape and thus there is no choice of cutting them into two equal halves.

Can you help him divide the land in a manner that both of his sons will be happy?