【排列组合】从3名骨科,4名脑外科和5名内科医生现选派5名参加赈灾医疗队.,则骨科、脑外科、内科都至少有一人的选派方法有几种?为什么要用分类而不能直接用C(3,1)C(4,1)C(5,1)C(9,2)来计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 16:46:56
![【排列组合】从3名骨科,4名脑外科和5名内科医生现选派5名参加赈灾医疗队.,则骨科、脑外科、内科都至少有一人的选派方法有几种?为什么要用分类而不能直接用C(3,1)C(4,1)C(5,1)C(9,2)来计算](/uploads/image/z/5157777-57-7.jpg?t=%E3%80%90%E6%8E%92%E5%88%97%E7%BB%84%E5%90%88%E3%80%91%E4%BB%8E3%E5%90%8D%E9%AA%A8%E7%A7%91%2C4%E5%90%8D%E8%84%91%E5%A4%96%E7%A7%91%E5%92%8C5%E5%90%8D%E5%86%85%E7%A7%91%E5%8C%BB%E7%94%9F%E7%8E%B0%E9%80%89%E6%B4%BE5%E5%90%8D%E5%8F%82%E5%8A%A0%E8%B5%88%E7%81%BE%E5%8C%BB%E7%96%97%E9%98%9F.%2C%E5%88%99%E9%AA%A8%E7%A7%91%E3%80%81%E8%84%91%E5%A4%96%E7%A7%91%E3%80%81%E5%86%85%E7%A7%91%E9%83%BD%E8%87%B3%E5%B0%91%E6%9C%89%E4%B8%80%E4%BA%BA%E7%9A%84%E9%80%89%E6%B4%BE%E6%96%B9%E6%B3%95%E6%9C%89%E5%87%A0%E7%A7%8D%3F%E4%B8%BA%E4%BB%80%E4%B9%88%E8%A6%81%E7%94%A8%E5%88%86%E7%B1%BB%E8%80%8C%E4%B8%8D%E8%83%BD%E7%9B%B4%E6%8E%A5%E7%94%A8C%283%2C1%29C%284%2C1%29C%285%2C1%29C%289%2C2%29%E6%9D%A5%E8%AE%A1%E7%AE%97)
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