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Find the sum of the first 9 terms in the following geometric series.
(Do not round your answer.)
7 + 21 + 63 + ...


Sagot :

Answer:

The sum of first 9 terms of the given sequence =68887

Step-by-step explanation:

Given sequence:

7+21+63.......

The given sequence is a geometric sequence as the successive numbers bear a common ratio.

The ratio can be found out by dividing a number by the number precending it.