17
13
17 cause it is the next prime number
2
17, it's the sequence of primes.
What would be the next number in this series 15 12 13 10 11 8?
17
17 cause it is the next prime number
13
17
you are adding 2, so its 17
11
2
The pattern is - 5 then +2. 2 and 4 are the next numbers in the series.
17, it's the sequence of primes.
49 (it is an arithmetic series that adds 5 then 7 then 9 then 11 then 13)
13