［數撚圍爐區］可能係最後一個post（36）
荃雚藎薜菳
1001 回覆
6 Like
1 Dislike
第 1 頁第 2 頁第 3 頁第 4 頁第 5 頁第 6 頁第 7 頁第 8 頁第 9 頁第 10 頁第 11 頁第 12 頁第 13 頁第 14 頁第 15 頁第 16 頁第 17 頁第 18 頁第 19 頁第 20 頁第 21 頁第 22 頁第 23 頁第 24 頁第 25 頁第 26 頁第 27 頁第 28 頁第 29 頁第 30 頁第 31 頁第 32 頁第 33 頁第 34 頁第 35 頁第 36 頁第 37 頁第 38 頁第 39 頁第 40 頁第 41 頁
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.
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.
2條題目 都係permutation
1) 2880
2) 46080
1) 2880
2) 46080
第一題 用nPr既話 點計
求解
