Question

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

Answer 1

已知全集U={1,2,3,4,5,6,7,},集合A={2,3,5,6},集合B={3,5,7},

CuA∩CuB={1,4}

CuA∪CuB={1,2,4,6,7}