回复：antique math problem

来源: calligraphy 于 2011-01-26 13:46:05 [] [旧帖] [给我悄悄话] 阅读数 : (77 bytes)
回答: antique math problem 由 calligraphy 于 2011-01-25 22:06:09

in case of 0, 2, or 8 as possible last digit of y, my proof was wrong.

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