What kind of Algorithm is this !?!?

Posted on 2006-04-17
Last Modified: 2006-11-18
Check this out.

I just really want to know what is the algorithm for this.
I don't believe such thing like mind reader, there must be a algorithm that is runing behind it.

by the way, have some fun !!
Question by:jamewang
    LVL 84

    Accepted Solution

    Subtracting the sum of the digits from the number will always yield a multiple of 9
    all the multiples of 9 (less than 90) seem to be the same symbol
    LVL 45

    Expert Comment

    The result of the steps given there would always be a multiple of 9 and in the chart, all multiples of 9 have the same symbol

    Author Comment

    I guess first come first. I'll give the points to ozo.
    sorry about that, sunnycoder. but thanx any way.
    LVL 84

    Expert Comment

    For example, 9x always results in 90-9 and 8x always results in 80-8
    so the only real choice you have is the first digit,

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