If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

What is the fastest way to double your money?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

Count the number of squares in the picture below.

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

Can you find out the number that should replace the question mark with a valid reason?