So I’m going to count one by one so the 4th is 10,
5 is 13,
6 is 16,
7 is 19,
8 is 22,
9 is 25,
10 is 28,
11 is 31,
12 is 34,
13 is 37
14 is 40
15 is 43
16 is 46
17 is 49
18 is 52
19 is 55
Meaning that the 20th term is 58
If you look carefully you can see a pattern, it gets greater by 3 every number.
Hope this helped (pls mark as brainiest:)
