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 odd numbers are there in the sequence which are immediately preceded & also immediately followed by an even number?
5
2
3
4
1
Combination to be made is even (odd) even
Combinations are 6 3 8, 8 5 2, 4 3 4, 4 9 6