数学大拿们--请教数学题--多谢了

来源: breehm 于 2018-12-13 15:40:58 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (184 bytes)
本帖于 2018-12-13 15:43:31 时间, 由普通用户 breehm 编辑

Calculate the probability that a bridge hand of 13 cards contains four cards of one suit and three of each other suit.

( answer is 0.0263)

 

所有跟帖： 

• 0.105= 4*C(13,4)*C(13,3)*C(13,3)*C(13,3)/C(52,13) -oops_yz- ♀ 给 oops_yz 发送悄悄话 (0 bytes) () 12/13/2018 postreply 18:00:52

• Thanks a lot -breehm- ♀ 给 breehm 发送悄悄话 breehm 的博客首页 (0 bytes) () 12/14/2018 postreply 13:11:21

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