Пусть заданы множества A = {0, 1, 2}, B = {1, 2, 3}, C = {a, b, c} и D = {a, d, e}. Чему равно множество F = (A ∩ B) × (C \ D) { 1, 2, b, c}, {(0,b), (0, c), (1, b), (1,c)}, {(1, b), (1, c), (2, b), (2, c)}, {(1,a), (1,b), (1,d), (2, a), (2,b), (2,d)}, {(1,b), (1, c), (3, b), (3,c)}