Даны множества:A={2,3,8},B={2,3,8,11},C={5,11}.найдите 1)A∩B;A∩C;B∩C;2)A∪B;A∪C;B∪C.

Question

Даны множества:A={2,3,8},B={2,3,8,11},C={5,11}.найдите 1)A∩B;A∩C;B∩C;2)A∪B;A∪C;B∪C.

Answer 1

 1) A∩B = {2, 3, 8};
     A∩C = ∅;
     B∩C = {11};
2)A∪B = {2, 3, 8, 11};
    A∪C = {2, 3, 5, 8, 11};
    B∪C = {2, 3, 5, 8, 11}.