b***y
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bluedaemon (兰魔) 于 (Mon May 2 21:16:56 2005) 提到:
a magic number like 15, because 10^5=15, 11^4=15, 3^12=15. 7^8=15, as u can
see a^b=a+b for all combinations whose sum is 15, why is that? is it true for
all 2^i-1 numbers?
I said some bit flip-flop blah blah, and it's true for all 2^i-1 numbers. ft,
seemed i did answer it clearly. anybody can provide a classic answer? thx.
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thrust (thrust) 于 (Mon May 2 21:19: |
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