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Which of the following is the formula for the geometric sequence? 2, 6, 18, 54, ... A. an = 3(2)^n-1 B. an = 2(4)^n-1 C. an = 2(3)^n-1

Mathematics
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c
Geometric progression follows the rule a, ar, ar^2, ar^3 and so on comparing first two terms, you can find out that r = 3 you can see that since the first term (a) = 2, the possible answers can be B or C Since you have found r, you know that the answer is C
Thnk u @Rohangrr and @mu

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