SOLUTION: What is the geometric series of 36+6+1.....S9?

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Question 726822: What is the geometric series of 36+6+1.....S9?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
What is the geometric series of 36+6+1.....S9?
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a(1) = 36
r = 6/36 = 1/6
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Not sure what you mean by S9, but I'll assume it you mean a(9).
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a(9) = a(1)*r^8
==
a(9) = 36*(1/6)^8 = 1/6^6 = 0.00002143...
Cheers,
Stan H.