數學大拿們--請教數學題--多謝了

來源: breehm 於 2018-12-13 15:40:58 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (184 bytes)
本帖於 2018-12-13 15:43:31 時間, 由普通用戶 breehm 編輯

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- ♀ 給 oops_yz 發送悄悄話 (0 bytes) () 12/13/2018 postreply 18:00:52

• Thanks a lot -breehm- ♀ 給 breehm 發送悄悄話 breehm 的博客首頁 (0 bytes) () 12/14/2018 postreply 13:11:21

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