[考古]93年中原應數

看板trans_math作者 (書中自有顏如玉)時間20年前 (2005/06/17 16:59), 編輯推噓2(2推 0噓 0→)
留言2則, 2人參與, 最新討論串1/2 (看更多)
An urn contains 10 red and 10 white balls. The balls are drawn from the urn at random , one at a time . Find the probability that the four white balls in the six-balls drawn if the sample is done (a)with replacement (b)without replacement. -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 60.198.69.14
推
61.231.144.105 06/17, , 1F
題目看不太懂 (泣)
61.231.144.105 06/17, 1F
推
218.167.173.126 06/17, , 2F
replacement = 拿走不放回 應該吧...
218.167.173.126 06/17, 2F
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文章代碼(AID): #12if3T6Y (trans_math)
‣ 更多 GBRS 的文章
文章代碼(AID): #12if3T6Y (trans_math)