设全集U=(1,2,3,4,5,6,7,8,9),补集(A并集B)={1,3},A交集(补集B)={2,4},求集合B.

问题描述:

设全集U=(1,2,3,4,5,6,7,8,9),补集(A并集B)={1,3},A交集(补集B)={2,4},求集合B.

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