Question

Sendo A = {3, 4, 5, 6, 7} e B = {5, 6, 7, 8, 9 ...}, determine:
a)AuB b)AnB c)A – B d)B – A

Answer 1

a)AuB= {3,4,5,6,7,8,9}
b)AnB= {5,6,7}
c)A-B= {3,4}
d)B-A= {8,9}