Question

Sendo A = {1,2,a,b} B = {1, a,c,3,5} e C = {2,a,c,6,7} Determine:
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Answer 1

Sendo A = {1,2,a,b} B = {1, a,c,3,5} e C = {2,a,c,6,7}

a) A ∪ B = {1,2,a,b,c,3,5}

b) A ∩ C = {2,a}