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题目内容
Of the 66 guests at a certain hotel, 40 guests enjoy dancing and 25 guests enjoy swimming. If all but 6 of the guests enjoy dancing or swimming or both, how many guests enjoy dancing but not swimming?
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· 相关考点
6.1.2 交集、并集、补集、全集关系
6.1.2 交集、并集、补集、全集关系
以上解析由 考满分老师提供。