[數撚圍爐區]可能係最後一個post(36)

1001 回覆
6 Like 1 Dislike
2020-05-22 19:28:29
2020-05-22 19:55:40
有無人識依兩條permutation 題目

1) Pauline has 1 dictionary, 1 comic and 5 different fictions. She wants to put 4 books on the lower shelf and 3 books on the upper shelf. If the dictionary and the comic are put in different shelf, find the number of arrangements of the books.

2) 6 children are arranged to sit in a row. And each one raises one hand before a teacher takes a photo of them. In how many ways can the children be arranged to sit with each one raising one hand.
2020-05-22 20:14:35
2020-05-22 20:23:38
2020-05-22 20:23:57
2條題目 都係permutation
1) 2880
2) 46080
2020-05-22 20:27:12
2020-05-22 20:33:21
第一題 用nPr既話 點計
2020-05-22 20:52:42
2020-05-22 22:04:05
求解
2020-05-22 23:41:02
2020-05-22 23:41:40
2020-05-22 23:45:57
2020-05-23 00:06:51
2020-05-23 00:07:19
2020-05-23 00:11:53
2020-05-23 00:23:20
2020-05-23 00:23:47
2020-05-23 00:31:59
2020-05-23 01:35:58
2020-05-23 10:58:30
2020-05-23 11:41:11
2020-05-23 11:47:58
2020-05-23 11:48:18
2020-05-23 12:01:33
2020-05-23 12:19:25
吹水台自選台熱 門最 新手機台時事台政事台World體育台娛樂台動漫台Apps台遊戲台影視台講故台健康台感情台家庭台潮流台美容台上班台財經台房屋台飲食台旅遊台學術台校園台汽車台音樂台創意台硬件台電器台攝影台玩具台寵物台軟件台活動台電訊台直播台站務台黑 洞