In following number series, two terms have been put within brackets. Choose the appropriate option
9 , 12 , 11 , 14 , 13 , x , 15
Option:
A. 12
B. 16
C. 10
D. 17
Answer: B . 16
Tweet
Justification:
Alternately we add 3 and subtract 1. Thus,
9 + 3 = 12, 12 - 1 = 11, 11 + 3 = 14
and so on. Missing number = 13 + 3 = 16.
