Find the next number in this series...

[psuresh1982]

1 , 2 , 3 , 5 , 9 , 12 , ?

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suresh

[psuresh1982]

Ok Friends...It is already one week over..

The next number in this series is 21. Now you know the answer. Can you find the pattern?

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suresh

[psuresh1982]

Add the number with the following pattern.

1^1,1^2,2^1,2^2,3^1,3^2,4^1,......

It means
1+(1^1) = 2
2+(1^2) = 3
3+(2^1) = 5
5+(2^2) = 9
9+(3^1) = 12
12+(3^2) = 21

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suresh