100 prisoners are stuck in the prison in solitary cells. The warden of the prison got bored one day and offered them a challenge. He will put one prisoner per day, selected at random (a prisoner can be selected more than once), into a special room with a light bulb and a switch which controls the bulb. No other prisoners can see or control the light bulb. The prisoner in the special room can either turn on the bulb, turn off the bulb or do nothing. On any day, the prisoners can stop this process and say "Every prisoner has been in the special room at least once". If that happens to be true, all the prisoners will be set free. If it is false, then all the prisoners will be executed. The prisoners are given some time to discuss and figure out a solution. How do they ensure they all go free?

What kind of storm is always in a rush?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Why do you find that most of the buildings are deprived of the 13th floor?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

What building has the most stories?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

The dirtier I get, the whiter I look. Who am I?