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试题原文 |
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∵集合A={x|0<x<9,x是质数}={2,3,5,7}, B={x|0<x<9,x∈N}={1,2,3,4,5,6,7,8}, 又∵集合S满足条件A?S?B ∴S={1,2,3,5,7},或S={2,3,4,5,7},或S={2,3,5,6,7或},或S={2,3,5,7,8}, 或S={1,2,3,4,5,7},或S={1,2,3,5,6,7},或S={1,2,3,5,7,8}, 或S={2,3,4,5,6,7},或S={2,3,4,5,7,8},或S={2,3,5,6,7,8}, 或S={1,2,3,4,5,6,7},或S={1,2,3,4,5,7,8},或S={1,2,3,5,6,7,8}, 或S={2,3,4,5,6,7,8},或S={1,2,3,4,5,6,7,8}, 故满足条件的集合S共有15个 故选C |
经过对同学们试题原文答题和答案批改分析后,可以看出该题目“设集合A={x|0<x<9,x是质数},B={x|0<x<9,x∈N},则满足条件A?S?..”的主要目的是检查您对于考点“高中集合间的基本关系”相关知识的理解。有关该知识点的概要说明可查看:“高中集合间的基本关系”。