you are right. possibility for odd number is wrong

來源: pj 於 2010-02-08 14:09:53 [] [舊帖] [給我悄悄話] 閱讀數 : (27 bytes)
回答: 回複：回複：5/36 由 pj 於 2010-02-06 17:15:54

also I forget 2 is a prime.

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