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Um, the symbol is always the same.
Check the multiples of 9, they are always the same symbol. Of course, the symbols rearrange each time you refresh the screen by checking your "mind read".
It is how I learned my 9s tables
You will always end up with 81, 72, 63, 54, 45, 36, 27, 18, or 9. Those symbols are always the same for each of the above on every screen. Thus the "mind reader" will always equal the symbol for those numbers listed above.
Another cool thing about the multiples of nine, the first digit plus the second digit for the first 10 multiples always equals 9. I think I will peruse an algebra thread.
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