SOLUTION: the following sum is a partial sum in a geometric sequence, use this fact to evaluate the sum. 3+12+...+786432

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Question 438181: the following sum is a partial sum in a geometric sequence, use this fact to evaluate the sum.
3+12+...+786432

Answer by robertb(5830)   (Show Source): You can put this solution on YOUR website!

n = 9, and , r = 4



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