9. Given A = {1, 2, 3, 4, 5, 6, 7, 8, 9} and B = {2, 4, 6, 8},
what is A∪B?
A∪B is the union of sets A and B, meaning it contains all the elements from both sets without duplicates.
In this case, A = {1, 2, 3, 4, 5, 6, 7, 8, 9} and B = {2, 4, 6, 8}.
A∪B would be {1, 2, 3, 4, 5, 6, 7, 8, 9} since it contains all the elements from both sets.