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题库 / Prep2007E1-PS-43
A committee of threepeople is to be chosen from four married couples. What is the number of different committeesthat can be chosen if two people who are married to each other cannot bothserve on the committee?
16
24
26
30
32
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归因：信息转化错误。把从4对伴侣里选3个和从3对伴侣里各选1个人整合成了1个步骤 C43
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