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3,6, 5, 20, 7, 42, 9, (....)?

Aptitude Quizzes Mathematics Aptitude Test

Question:
3,6, 5, 20, 7, 42, 9, (....)

Option A):
60
Option B):
66
Option C):
72
Option D):
54

Correct Answer is Option C):
72

Explanation:
The sequence is a combination of two series: I. 3, 5, 7, 9, (...) and II. 6, 20,42, (...)
The pattern followed in II is + 14, + 22, :.
Missing number =42 +30 = 72.