15
What would be the next number in this series 15 12 13 10 11 8?
10
15
you are adding 2, so its 17
15
-5
The next number is -21
53
What would be the next number in this series 15 12 13 10 11 8?
The series seems to be "add 3," so the next number in the series would be 12 followed by 15.
4
the answer is 1
10
17
26
10.