Series Satisfy a given condition and need to find how many numbers in that series.

1)

In the following number sequence 

7 8 6 5 2 4 3 1 8 7 9 4 6 8 3 1 4 2 7 5 6 4 8 1 3 8 9 7 2 6 4 8 3 5 2


A) 8

B) 6

C) 7

D) 10

Answer:

Option C

Explanation:

7 8 6 5 2 4 3 1 8 7 9 4 6 8 3 1 4 2 7 5 6 4 8  1 3 8  9 7 2  6 4 8 3 5 2