Correct option is D
Information Given:
Series: 6 2 7 2 6 4 8 4 7 4 3 3 4 2 6 7 1 9 7 4 7 9 1 6 5 8 5
Find even numbers that are:
Immediately preceded by an odd number.
Immediately followed by an even number.
Logic:
Check every even number for the pattern Odd – Even – Even.
Explanation:
Valid cases:

Total such even numbers = 2
Final Answer:
2
Final Correct Option:
D