10 примеров по множеству? решите по быстрее !

[1..3, 6, 9..11] + [2..4, 7, 10..12] = [1, 2, 3, 4, 6, 7, 9, 10, 11, 12] = [1..4, 6, 7, 9..12]
[1..3, 6, 9..11] * [2..4, 7, 10..12] = [2, 3, 10, 11]
[1..3, 6, 9..11] - [2..4, 7, 10..12] = [1, 6, 9]
вот может чемто