What number would be next in the series - 7, 10, 8, 11, 9, 12, ??

Answer 1

Must be 10.
Pattern: +3 -2 +3 -2

Answer 2

Answer is 10 13
there two series
1st 7 8 9 10
2nd 10 11 12 13

Answer 3

10 it is easy and 100 percent correct

Answer 4

there two series
1st 7 8 9 10
2nd 10 11 12 13 so the answer is 10 and 13