Study the following arrangement carefully to answer the questions given below:
7, 2, 6, 3, 7, 5, 6, 4, 2, 9, 6, 1, 3, 4, 1, 6, 3, 9, 1, 5, 6, 9, 2, 3, 1, 6, 5, 4, 3, 2, 1, 9, 6, 7, 1, 6, 3
How many 6s are there in the following numbers series, each of the immediately parceded by 1 or 5 and immediately followed by 3 or 9?

Options

A. None
B. One
C. Two
D. Three

Answer

D

Explanation

three = 163,569, 163