Spooky

[Lets go boating]

Have a try of this

http://milaadesign.com/wizardy.html

[Jimbo]

Do you want to know how it works, or would that ruin it?

[Biggles]

Yeh well,

Got stupid old me foxed.

[Pete7]

Originally Posted by Biggles

Got stupid old me foxed.

Mee too, go on then James, how does it work ?

Pete

[Jimbo]

Not a problem chaps. Don't read this if you don't want to know how it works!















Things start becoming a little clearer if you pick the same number each time. You'll find that the symbol you get changes, and you'll think "hmm, that's wierd".

Now, if you look further, you'll find that they symbols are the same for any multiple of nine, i.e. 9, 18, 27, 36 etc. This is because whenever you add the digits of a two digit number, and subtract the result from the original number you get, that's right, a multiple of nine. It's actually impossible to get, for example, 12, as your answer.

Hope that's reasonably clear - I was never much good at mathematical proofs! Sure there's a more technical way of explaining it!

[Jimbo]

Oh, and my housemate just said "What if you pick a multiple of nine to begin with", well that doesn't matter either, because every 2 digit multiple of nine, when you add the digits, adds up to nine, unless it's 99 which makes 18, so you still end up with your multiple of 9.

[Lets go boating]

Originally Posted by Jimbo

Not a problem chaps. Don't read this if you don't want to know how it work.






Things start becoming a little clearer if you pick the same number each time. You'll find that the symbol you get changes, and you'll think "hmm, that's wierd".

Now, if you look further, you'll find that they symbols are the same for any multiple of nine, i.e. 9, 18, 27, 36 etc. This is because whenever you add the digits of a two digit number, and subtract the result from the original number you get, that's right, a multiple of nine. It's actually impossible to get, for example, 12, as your answer.

Hope that's reasonably clear - I was never much good at mathematical proofs! Sure there's a more technical way of explaining it!

simple but effective

[Polwart]

Originally Posted by Jimbo

Sure there's a more technical way of explaining it!

there is as discussed on Ribnet some months ago!

http://rib.net/forum/showthread.php?t=15301

[Jimbo]

Originally Posted by Polwart

there is as discussed on Ribnet some months ago!

http://rib.net/forum/showthread.php?t=15301

I used to be able to do mathematical proofs. Aaaah, they bygone days of A-Levels when I actually knew some maths