Question

sendo A={3,4,5,6,7} e B={5,6,7,8...}, determine:
a) AuB
b) AnB

Answer 1

a) AuB { 3,4,5,6,7,8}

b) AnB {5,6,7}

Answer 2

a) AuB= {3,4,5,6,7,8...}
b) AnB= {5,6,7}