SOLUTION: how do i find the recursive formula: 20,30,40,50...

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Question 749623: how do i find the recursive formula: 20,30,40,50...
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
There are many ways, this is a simple way:

a%5B1%5D=20

a%5Bn%5D=a%5Bn-1%5D%2B10

:)