题目内容

5.全集I={0,1,2,3,4,5,6,7,8,9},A={1,2,3}B={2,5,6,7},则A∪B={1,2,3,5,6,7},A∩B={2},(∁IA)∩B={5,6,7}.

分析 根据集合的交、并、补集的混合运算法则计算即可.

解答 解:全集I={0,1,2,3,4,5,6,7,8,9},A={1,2,3},B={2,5,6,7},
则A∪B={1,2,3,5,6,7},A∩B={2},(∁IA)={0,4,5,6,7,8,9},
则(∁IA)∩B={5,6,7},
故答案为:{1,2,3,5,6,7},{2},{5,6,7}.

点评 此题考查了交、并、补集的混合运算,熟练掌握各自的定义是解本题的关键.

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