Question

sunt clasa a 6-a
dau coroana!​

Answer 1

A = {0, 10, 20, 30, 40}

B = {10, 15, 20}

C = ∅

D = {10, 20}

A ∪ B = {0, 10, 15, 20, 30, 40}

A ∩ B = {10, 20}

A \ B = {0, 30, 40}

A ∪ C = {0, 10, 20, 30, 40}

B ∪ C = {10, 15, 20}