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
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}
AuB={2,3,8,11}
AuC={2,3,5,8,11}
BuC={2,3,5,8,11}
AnB={2,3,8}
AnC={}
CnB={11}