已知全集U={1,2,3,4,5,6,7,8,9},∁U(A∪B)={1,3},A∩{∁UB}={2,4},求集合B.
人气:153 ℃ 时间:2019-08-18 12:49:21
解答
∵全集U={1,2,3,4,5,6,7,8,9},∁U(A∪B)={1,3},
∴A∪B={2,4,5,6,7,8,9},
又∵A∩{∁UB}={2,4},
∴B={5,6,7,8,9}.
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