C(6,1)xC(6,1)xC(10,1)xC(12,1)xC(30,4)/C(34,6)
我的解法
有錯請指正
※ 引述《sleepsoy (洪小義)》之銘言：
: 題目：
: From a faculty of six professors , six associate professors , ten assistant
: professors and twelve instructors , a committee , of size six is formed
: randomly . What is the probability that there is at least one person from each
: rank on the committee ?
: 不知道怎麼下手...請高手幫忙!!!
: 謝謝
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