Do you have gray matter?

Thread: Do you have gray matter?

1. Do you have gray matter?

Let's see if you can figure out the mechanism behind this piece of "Voodoo Magic ".

http://www.foggys-funnies.com/o2/psychic/index.shtml

2. I know I know.

/me winks at Kittenwalk

-dn

3. Chart changes every time you click retry. Set up so any number you pick will show the symbol beside the 'answer'.

4. Originally posted by Mutate Now!
Chart changes every time you click retry. Set up so any number you pick will show the symbol beside the 'answer'.
Not exactly...there are quite a few numbers there and quite a few symbols

5. There are only so many numbers that can be obtained by this combination and they all use the same symbol so it's right every time. Each refresh the symbol changes but that group is always the same.

ie 9,18, etc

6. ...I don't get it?? I am mesmurized

7. Yes...All numbers divisible by 9 are assigned the same symbol. No matter what two numbers you choose to add together after you subtract the sum from the two digit value, you will be left with a number that is a multiple of 9...Good work...Geeks!!!

8. I can do the 9 x tables with my fingers.

9. The answer is right there:

"Choose any 2 digit number, add both digits together and subtract total from original number."

OK xy is my two digit number, so it says to:

(10x + y) - (x+y) = 9x

So answer is always multiple of 9. At every multiple of 9, symbol is the same......