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OpenStudy (anonymous):
Is the sequence geometric? 2, 6, 18, 54,...
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jimthompson5910 (jim_thompson5910):
Since you're multiplying each term by 3, this is indeed a geometric sequence.
jimthompson5910 (jim_thompson5910):
Also, notice how dividing each term by its previous term gives us the common ratio of 3 ex: 54/18 = 3, 18/6 = 3, etc.. This gives us further proof that this is a geometric sequence.
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