you are right. possibility for odd number is wrong

来源: pj 于 2010-02-08 14:09:53 [] [旧帖] [给我悄悄话] 阅读数 : (27 bytes)
回答: 回复：回复：5/36 由 pj 于 2010-02-06 17:15:54

also I forget 2 is a prime.

请您先登陆，再发跟帖！