(2n!)!/(n!n!)shoud be (2n)!/(n!n!)

jinjing · 2010-11-12 08:47:07Z

(2n!)!/(n!*n!)shoud be (2n)!/(n!*n!)简介

来源: jinjing 于 2010-11-12 08:47:07 [档案] [旧帖] [给我悄悄话] 阅读数 : (0 bytes)

回答: Correcting: (2n!)!/(n!*n!)types,every type has n!*n! permutation 由 jinjing 于 2010-11-11 18:06:09

您的位置：文学城 » 论坛 » 脑筋急转 » (2n!)!/(n!*n!)shoud be (2n)!/(n!*n!)

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.