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OpenStudy (anonymous):
Find the sum of the first 16 terms of the geometric series 1/5+1/20+1/80,...
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OpenStudy (anonymous):
Do you have a formula for sum of a GP?
OpenStudy (tkhunny):
(1/5)*[1 + 1/4 + 1/(4^2) + ... 1/(4^15)]
OpenStudy (anonymous):
thanks! :)
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