I={0,1,2,3,4},A={0,1,2,3},B={2,3,4},(CIA)交(CIB)是多少
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I={0,1,2,3,4},A={0,1,2,3},B={2,3,4},(CIA)交(CIB)是多少
I={0,1,2,3,4},A={0,1,2,3},B={2,3,4},(CIA)交(CIB)是多少
I={0,1,2,3,4},A={0,1,2,3},B={2,3,4},(CIA)交(CIB)是多少
CiA={4}
CIB={0,1}
(CIA)交(CIB)是空集