已知全集U={1,2,3,4,5,6,7},A={2,4,5},B={1,3,5,7},求AU（CuB）,（CuA）∩(

U={1,2,3,4,5,6,7},A={2,4,5},B={1,3,5,7}
CuB={2,4,6},CuA={1,3,6,7}
AU（CuB）={2,4,5,6}
(CuA）∩(CuB）={6}