Study the pattern and complete the series : 9, 12, 11, 14, 13, ?, 15

Answer 1

Thanks for the puzzle.

The series may be explained as below:
9 + 3 = 12
12 - 1 = 11
11 + 3 = 14
14 - 1 = 13
So the next number should be 13 + 3 = 16 and 16 - 1 = 15.
So the answer is 16

Answer 2

There are 2 series.one is 11,13,15 and other is 12,14,16
Hence answer is 16.

Answer 3

The number is 16
9, 12, 11, 14, .13, 16,15,

Answer 4

Consider alternative terms:

we get 9,,11,13,15
and 12,14,16
therefore answer is 16

Answer 5

9+3=12
11+3=14
13+3=16
15+3=18