Question

São dados os conjuntos A = {15,26,27,31,50}, B = {15,20,26,39,43} e C = {12,15,31,43,54}. Marque a alternativa correta: *​

Answer 1

Resposta:

Analisando as alternativas:

a) A ∩ B = {15, 26}

Falso, 26 ∈ (A ∩ B)

b) A ∪ B = {15, 20, 26, 27, 31, 39, 43, 50}

Falso, 54 ∉ (A ∪ B)

c) A ∪ (B ∩ C) = {15, 26, 37, 31, 43, 50}

Verdadeiro, 43 ∈ (A ∪ (B ∩ C))

d) A ∪ (B - C) = {15, 20, 26, 27, 31, 39, 50}

Falso, 31 ∈ (A ∪ (B - C))

Portanto, a alternativa correta é c)