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已知集合M;(0,1,2),则M的真子集的个数为 () A.4个 B.5个 C.6个 D.7个
已知集合M;(0,1,2),则M的真子集的个数为 () A.4个 B.5个 C.6个 D.7个
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已知集合M;(0,1,2),则M的真子集的个数为 () A.4个 B.5个 C.6个 D.7个
设全集U={0,1,2,3},集合M={0,1,2},N={0,2,3},则M∩CuN=()
A.空集
B.{1}
C.{0,1,2}
D.{2,3}
设集合M={-1,0,1,2,8},N={x|x≤2},则M∩N=
A.{0,1,2}
B.{-1,0,1}
C.{-1,0,1,2}
D.{0,1}