# It's a numbers game... or is it?

1. 73
W. Christopherposted 7 years ago

Eureka!!! I've just thought of something!!! Actually, I don't know if it's been thought of already, but I've tested it over and over again and it seems to work with everything that I've tested.

Here's how this number game (possibly a numbers rule) goes:

Take a number that has more that has more than one digit in it. If you have to, you can use a single digit number, but when you apply it to the test below, add a zero before it.

For demonstrative purposes, I'll use the number 12.

Now then, reverse the digits of the number.

For the number 12, that would be 21.

Subtract the difference between.

12 - 21 = -9
or
21 - 12 = 9

The answer is always a multiple of the number 9, as long as the number that you pick is at least a number in the double digits.

- - - - - - - - - - - -

Can you find any number (other than 0) that doesn't follow this rule?

Here are a couple more examples:

The number that I select is 3. Because it is a single digit number, I'm going to add a "0" before it, making it a double digit number.

03 - 30 = -27
or
30 - 3 =  27

27 & -27 are both multiples of 9... next one...

2123 - 3212 = -1089 / 9 = -121
or
3212 - 2123 = 1089 / 9 = 121

Yup, it holds true here.

Can you break this numbers game?

Have fun!

2. 88
LeanManposted 7 years ago

It even works with negative numbers if you really want to try..

1. 73
W. Christopherposted 7 years agoin reply to this

working