討論串[問題] 機率的問題
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※ 引述《travelfox.bbs@ptt.cc (積極)》之銘言:. > ※ 引述《passers (路人)》之銘言:. > : 題目:. > : For a group of 100 people, compute. > : (a) the expected number of days of
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題目:. For a group of 100 people, compute. (a) the expected number of days of the year. that are birthdays of exactly 3 people:. 解法:. 令 Ai 表示有三個人生日在第 i
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