Question

Sendo A = {5, 7, 9, 11} e B = {7, 9, 10, 12, 13, 15}, classifique como verdadeiro ou falso as seguintes afirmações: a) A – B = {5, 7, 9, 11, -9,-10,-12,-13,-15} b) A – B = {5, 11} c) B – A = {10, 12, 13, 15} d) B – A = {10, 12, 13, 15,-7,-11}

Answer 1

A = {5, 7, 9, 11} e B = {7, 9, 10, 12, 13, 15}

a) A – B = {5, 7, 9, 11, -9,-10,-12,-13,-15}  Falso

b) A – B = {5, 11} Verdadeiro

c) B – A = {10, 12, 13, 15}  Verdadeiro

d) B – A = {10, 12, 13, 15,-7,-11} Falso