If A = {b, c, d, e, f, g}, B = {a, e,f, i, o, u, t}, U = {a, b, c, d, e, f, g, h, i, j, k, l, o, t, u, v,
z}. Perform the following operations on sets and find the solutions.
a) A ∪ B b) A ∩ B c) A′ d) A – B