If A = {2, 3, 5, 7, 11} and B = ϕ, find:
(i) A ∪ B
(ii) A ∩ B
Given; A = {2, 3, 5, 7, 11} and B = ϕ
(i) A ∪ B = {2, 3, 5, 7, 11}
(ii) A ∩ B = ϕ