问题描述: 已经集合U={1,2,3,4,5,6,7},A={2,4,5,7},B={3,4,5},则(∁UA)∪(∁UB)=______. 1个回答 分类:数学 2014-11-10 问题解答: 我来补答 ∵∁UA=U-A={1,2,3,4,5,6,7}-{2,4,5,7}={1,3,6,7}∁UB=U-B={1,2,3,4,5,6,7}-{3,4,5}={1,2,6,7}∴(∁UA)∪(∁UB)={1,2,3,6,7}故答案为{1,2,3,6,7} 展开全文阅读