已知全集U={x∈N*|x<9},集合A={1,2,3,4,5,6},集合B={4,5,6},则(∁UA)∪B等于( )A.∅B.{7,8}C.{4,5,6}
题型:单选题难度:简单来源:不详
已知全集U={x∈N*|x<9},集合A={1,2,3,4,5,6},集合B={4,5,6},则(∁UA)∪B等于( )A.∅ | B.{7,8} | C.{4,5,6} | D.{4,5,6,7,8} |
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答案
∵全集U={x∈N*|x<9}={1,2,3,4,5,6,7,8},集合A={1,2,3,4,5,6}, ∴∁UA={7,8}, ∵集合B={4,5,6}, ∴(∁UA)∪B={4,5,6,7,8}. 故选D |
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