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 many times in a given day, minutes and hour clock comes in a straight line ?

Identify the 10 differences between the two given pictures.

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

A Club organizes a Running Race, and John, Jacob, Minda, and Tony participated.

The results are as follows

John beats Jacob
Minda beats Toni
Toni beats John

Who came first in the race?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Prove that twice of ten is the same as twice of eleven.

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

Find the last number in the series below:

voN luJ yaM raM ---