Сидоров Николай
Профи
(965)
1 день назад
4. A: (5/6); B: (0,25); C: (1/6); D: (11/36)
5. A ∩ B: {12, 24}; A ∪ B: {3, 4, 6, 8, 9, 12, 15, 16, 18, 20, 21, 24, 27, 28}; A B: {4, 8, 16, 20, 28}; B A: {3, 6, 9, 15, 18, 21, 27}
6. (0.3)
7. a) (22/51); b) (8/17 )