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e(ho0n3
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I don't know if this has been posted already, but anwho...
If you pick any positive integer greater than 9 and subtract the sum of its digits from that number, you'll end up with a multiple of 9. How do I know it's a multiple of 9? Curiously enough, the sum of the digits of a positive integer that is a multiple of 9 is a multiple of 9. Do this enough times and you'll end up with 9.
I tried this with other number systems and it seems to hold. This is the most interesting play of numbers if found to date.
If you pick any positive integer greater than 9 and subtract the sum of its digits from that number, you'll end up with a multiple of 9. How do I know it's a multiple of 9? Curiously enough, the sum of the digits of a positive integer that is a multiple of 9 is a multiple of 9. Do this enough times and you'll end up with 9.
I tried this with other number systems and it seems to hold. This is the most interesting play of numbers if found to date.