集合U=(1.2.3.4.5.6.7.8.9)Cu(A∪B)=(1.3) A∩CuB=(2.4)则集合B?
有几种情况?
人气:184 ℃ 时间:2019-08-18 12:42:25
解答
就一种情况啊B=(5.6.7.8.9)
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