Question

Продолжить числовой ряд: 2, 5, 8, 11 7,10, 9, 12, 11 4, 5. 15,  ..., ..., 39, 49, 60 2, 5, 15,  18, ..., ..., 171, 174  

Answer 1

2, 5, 8, 11, 14, 17, 20

7, 10, 9, 12, 11, 14, 13, 16, 15

4, 9, 15,  22, 30, 39, 49, 60

2, 5, 15,  18, 54, 57, 171, 174

Answer 2

2, 5, 8, 11, 7, 10, 9, 12, 11, 4, 5, 15, 18, 21, 27, 30, 33, 39, 49, 60

To continue the pattern, we add 3 to each of the first four terms to get 2, 5, 8, 11. Then, we subtract 2 from the next two terms to get 7, 10. Next, we add 1 and then 3 to get 9, 12. After that, we add 1, 3, 6 to get 11, 4, 5. Then, we add 10, 3, 6, 9 to get 15, 18, 21, 27. The pattern seems to be getting more complex. However, if we notice that every third term is a multiple of 5, we can easily determine the missing terms to be:

45, 39, 49, 60, 75, 87, 99, 120, 141, 174

To continue, we add 30, 42, 51, 21, 12, 21, 21, 33, 33. Therefore, the complete series is:

2, 5, 8, 11, 7, 10, 9, 12, 11, 4, 5, 15, 18, 21, 27, 30, 33, 39, 49, 60, 45, 39, 49, 60, 75, 87, 99, 120, 141, 174.