作者查詢 / s25g5d4
作者 s25g5d4 在 PTT [ SENIORHIGH ] 看板的留言(推文), 共168則
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2F推:是乙是對的吧? P(A|B) = n(A且B) / n(B)05/21 20:25
3F→:n(A且B)也就是兩個都是男的 只有一種情況05/21 20:25
4F→:n(B)是其中一個是男孩05/21 20:25
18F推:還好我不打算讀國文系05/21 08:16
19F→: 中05/21 08:16
1F推:基本上買了多半也是放著不用 你玩電腦的時候會想到要讀書05/13 22:18
2F→:嗎orz05/13 22:18
10F推:星期一的時候 兩組個選一個=>C(5,1)*C(5,1)05/14 20:25
11F→:又上下午可調 在乘以205/14 20:26
12F→:星期二的時候 兩組各選一個 但昨天已各選走一個05/14 20:26
13F→:所以只剩C(4,1)*C(4,1) 又上下午可調 再乘以2 以下類推05/14 20:27
14F→:所以式子變5*5*2 *4*4*2 *3*3*2 *2*2*2 *1*1*205/14 20:28
15F→:整理一下就變p版友說的5!5!2^505/14 20:28
16F→:又或是說 兩組先分配周一是誰 周二又是誰 最後再乘以2^505/14 20:29
17F→:因為上下午可調05/14 20:29
18F→:第一題我也不太會...大概要列出來吧orz05/14 20:30
5F→:薔薇少女耶 好久沒看了04/30 21:20
13F推:排列組合沒學好 機率怎麼辦orz04/30 21:03
5F推:文章寫的真好orz04/30 12:43
2F→:本版已被一堆台大文淹沒 只有兩篇清流再問排列組合orz04/29 21:58
8F推:好H 不用嗎?04/29 21:57
10F推:P不過就是C乘上n!(看情況決定n) 其實在整理的時候用C會比04/29 22:12
11F→:叫直觀 比較看得懂04/29 22:13
13F推:有人會為了無限流量去讀交大嘛XD 其實我還蠻心動的04/29 22:00