Question

dados os conjuntos A={1,2,3,4,5}, B={4,5,6,7},C={4,5,6,8} descubra o reseltado de. (A-B)e (b-c)

Answer 1

A - B = {1,2,3}

B - C = {7}

Answer 2

A={1,2,3,4,5}, B={4,5,6,7},C={4,5,6,8} 

a-b = {1,2,3,6,7}
b-c = {7}