Study the following number sequence to answer these questions given below it:
5 1 4 7 3 9 8 5 7 2 6 3 1 5 8 6 3 8 5 2 2 4 3 4 9 6

How many even numbers are there in the sequence which are immediately preceded by an odd number but immediately followed by an even number
1) 1
2) 2
3) 4
4) More than 4
5) None of these

Explanation

3, 4