How do they get this to work?

[caty]

http://milaadesign.com/wizardy.html

[BrotherBuzz]

1. Notice how any number gives the same answer?

Maybe that's a clue. :shrug:

[caty]

2. I tried it three times with three

different numbers and got three different answers that were correct.

[BrotherBuzz]

3. I guess I practice fuzzy math because I know...

any number having the sum of its digits subtracted will always result in a multiple of 9. :shrug:

[Floogeldy]

4. Congratulations. You found a psychic computer!

;)

[Deja Q]

5. Algebra

And some nice artistry skills too. :D

[jadedconformist]

6. Hmm.

Your number is a 2 digit number, so it can be written as 10x + y (for 42: x = 4 and y = 2). Then you are asked to subtract x and y from that, which leaves you with 10x + y - x - y = 9x, so, no matter what you picked you end up with a multiple of 9. Look at the chart and you will see that all multiples of 9 have the same symbol.

Edit: apparently way off? too tired to see.

[steely]

7. Doesn't apply here.

I got three different symbols too. And some if not all of the multiples of 9 have different symbols - not the same symbol as your theory suggests.

[Floogeldy]

8. Hey, Einstein.

They CHANGE the symbols every time you do it. ;)