How many 9's are there in the following number series, which are immediately preceded by 3 and followed by 6?
3 9 6 9 3 9 3 9 3 9 6 3 6 3 9 5 6 9 5 6 9 3 9 6 3 9
1
4
2
3
3
2
4
None of these
How many 9's are there in the following number series, which are immediately preceded by 3 and followed by 6?
3 9 6 9 3 9 3 9 3 9 6 3 6 3 9 5 6 9 5 6 9 3 9 6 3 9