Direction : Study the following arrangement carefully to answer the question.

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 6’s are there in the following number series, each of which is immediately preceded by 1 or 5 and immediately followed by 3 or 9?

Three

So, it is clear from the above series that the correct answer is option (3) i.e. Three.