Question

а) Даны множества: А={ 2, 3. 8} , В= {2, 3, 8, 11} , С={5,11} ... Найдите: 1) А∪В, A∪С, B∪C 2) A⋂B, A⋂C, C⋂B

Answer 1

1) AuB {2,3,8,11}       

    AuC {2,3,5,8,11}

    BuC {2,3,5,8,11} 

2) AnB{2,3,8}

    AnC{...}

    CnB{11} 

Answer 2

AuB={2,3,8,11}

AuC={2,3,5,8,11}

BuC={2,3,5,8,11}

AnB={2,3,8}

AnC={}

CnB={11}