Think of a number with two digits. For example 43. Follow the Magic Gopher's instructions and he will amaze you by telling you what number you chose.



wow , i can't believe in my eyes .
It's so mysterious . how it gives the correct answer ?

It's easy to understand, when you do the process you will always get a number which can be divided by 9 so it always be a multiple of 9 and if you look at the all multiples of 9, you will find out all of them have same shape. The above statement has a mathematical proof.

My God! They've guessed right 4 times... on end! How??? How do they do it?!