數學大拿們--請教數學題--多謝了

來源: 於 2018-12-13 15:40:58 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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)