There are 12 boys and 8 girls in the English debating team. A group of 2 boys and 3 girls will be chosen to participate in a summer training programme. In how many ways can the group be formed if
(a) there are no other restrictions?
(b) one particular boy must be included?
(c) one particular girl must not be included?
F.5 P / C 概率問題 (急~~~)
2013-04-27 6:10 pm
回答 (1)
2013-04-27 11:15 pm
✔ 最佳答案
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收錄日期: 2021-04-23 23:24:43
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130427000051KK00059