21, 22, 24, 25
35 : 5 = 7
38 : 8 = ...
N принадлежит {20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30}
20 : 0 = 0
21 : 1 = 21
22 : 2 = 11
23 : 3 = ...
24 : 4 = 6
25 : 5 = 5
27 : 7 = ...
28 : 8 = ...
29 : 9 = ...
30 : 0 = 0
N = 21, 22, 24, 25 = 4
ответ: 4 числа