In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces. -
3, 6, 5, 20, 7, 42, 9,
Answer: D. 72
The sequence is a combination of two series :
I. 3, 5, 7, 9 and
II. 6, 20, 42, (....)
The pattern is followed in II is + 14, + 22,....
.'. Missing number = 42 + 30 = 72.