Question

已知A={1,2,3,4},B={3,4,5,6},C={1,3,4,6},求

Answer 1

A∩B = {3,4}

A∩C = {1,3,4}

A∪B = {1,2,3,4,5,6}

A∪C = {1,2,3,4,6}

B∩C = {3,4,6}

A∩空集 = 空集

B∪C = {1,3,4,5,6}

C∪空集 = {1,3,4,6}