++ [ originally posted by hoshi
] ++
well, for example:
79 --> 63
78 --> 63
77 --> 63
76 --> 63
75 --> 63
74 --> 63
73 --> 63
72 --> 63
71 --> 63
70 --> 63
so any number you pick in the 70's will give you a final answer of 63.
some numbers are obviously impossible to get, eg 99, 0
10-19 gives you 9
20-29 gives you 18
30-39 gives you 27
etc.
every number you get will be a multiple of 9, but the highest you can get is 81
it's all to do with 9 being a wicked number to play with
anyways, that's how i see it