Вопрос:

Увеличь на 8 числа: 5, 4, 8, 10, 1, 7, 6, 3, 2, 11, 9, 12, 0.

Ответ:

13, 12, 16, 18, 9, 15, 14, 11, 10, 19, 17, 20, 8.