the answer is 1
11 comes next.
5
59 is the next number in this series.
12,7,13,8 etc
The next number in the series is 67.
The next number in the series is 13112221.
10 4 3 11 15 9 8 16 20....
11
2
The pattern is - 5 then +2. 2 and 4 are the next numbers in the series.