Find out the missing numbers in the following series:

12, 15, 14, 17 ? 19

Correct option is B

​Given:

Number series:

12, 15, 14, 17, ?, 19

Solution:

Let’s look at odd-positioned terms:
1st = 12, 3rd = 14, 5th = ?

This goes:
12 → 14 → ? (increasing by 2)

So, 5th term = 14 + 2 = 16

Now check even-positioned terms:
2nd = 15, 4th = 17, 6th = 19
increases by 2