Can you find the missing number in the below series? 43, 8, 38, 9, 34, 11, _, 14

Answer 1

31

---

43, 8, 38, 9, 34, 11, 31, 14
there are 2 series in one:
1. ------
43- 38- 34- 31
the difference: 5- 4- 3

2.------
and
8-9-11- 14
the difference:
1-2-3