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  3. A committee contains six professors, three managers, and four coordinators. A subgroup of five is to be selected from the commit

A committee contains six professors, three managers, and four coordinators. A subgroup of five is to be selected from the commit

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问题 A committee contains six professors, three managers, and four coordinators. A subgroup of five is to be selected from the committee. If Professor Dr. Wong and Manager Ms. Macy must be included, how many different subgroups can be selected? ________.
选项
答案165
解析 委员会共有13人，现在其中2人一定要加入五人小组，只需要从剩下11人中选3人，为组合问题，答案为C113==165。
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