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(1,2.3,4)的子集、真子集、非空子集、非空真子集分别是哪几个
人气:461 ℃ 时间:2019-11-07 13:20:55
解答
{1,2,3,4}子集:{},{1},{2},{3},{4},{1,2},{1,3},{1,4},{2,3},{2,4},{3,4},{1,2,3},{1,2,4},{1,3,4},{2,3,4},{1,2,3,4}(16个)真子集:{},{1},{2},{3},{4},{1,2},{1,3},{1,4},{2,3},{2,4},{3,4},{1,2,3},{1,2,4},{1...
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