Question

离散数学！若集合A={1,2,3,{1,2}},请求出该集合的幂集

若集合A={1,2,3,{1,2}},请求出该集合的幂集

Answer 1

P(A) = {Φ，{1},{2},{3},{{1,2}},{1,2},{1,3},{1,{1,2}},{2,3},{2,{1,2}},{3,{1,2}},{1,2,3},{1,3,{1,2}},{1,2,{1,2}},{2,3,{1,2}},{1,2,3,{1,2}}}

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