Question

设A={x∈Z|-6≤x≤6},B={1,2,3},C={3,4,5,6},求A∪（B∩C） A∩Ca（B∪C）

Answer 1

A={-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6}

B={1,2,3}

C={3,4,5,6}

B∩C={3}

A∪(B∩C)={-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6}

B∪C={1,2,3,4,5,6}

CA (B∪C)={-6,-5,-4,-3,-2,-1,0}

A∩CA (B∪C)={-6,-5,-4,-3,-2,-1,0}