集合AB,满足A并B=(0.1).求AB的组数.

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集合AB,满足A并B=(0.1).求AB的组数.

A{0,1},B空集; A{0,1},B{0}; A{0,1}B{1}; A{0}B{1}
B{0,1},A空集; B{0,1},A{0}; B{0,1},A{1}; B{0},A{1} ; A{0,1},B{0,1},

A{0,1},B空集; A{0,1},B{0}; A{0,1}B{1}; A{0}B{1}
B{0,1},A空集; B{0,1},A{0}; B{0,1},A{1}; B{0},A{1} ; A{0,1},B{0,1},