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Which represents the sum of the geometric series 4+12+36+108+...+78732?

Which represents the sum of the geometric series 4+12+36+108+...+78732?
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Which represents the sum of the geometric series 4+12+36+108+...+78732?

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User Pach
by
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1 Answer

1 vote
Sn= a1- an r / 1-r
= 4-78732 (3) / 1-(3)
= 4-236196 / -2
= -236192 / -2
= 118,096

answered
User Darcy
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7.5k points
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