Question

AUB cobj A,{20,23,27,26,21,24,30} B{ 22,25,28,29,21,24,30}. qual a união de A +B e qual B-A

Answer 1

A+ B
(42, 48, 55, 55, 52, 48, 60) 

B-A 
(2, 2, 1, 3, 0, 0, 0)

Answer 2

A+B=(21,24,30)
B-A=(20,23,27,26)