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What is the 8th term of the sequence 6,18,54,....?

What is the 8th term of the sequence 6,18,54,....?
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What is the 8th term of the sequence 6,18,54,....?

User Manish Arora
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1 Answer

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r = (18)/(6) \\ r = 3 \\ \\ a_(n) = a_(1) * r^(n-1) \\ a_(8) = 6 * 3^(8 - 1) \\ a_(8) = 6 * 3^(7) \\ a_(8) = 6 * 2187 \\ a_(8) = 13122
User Dean Edwards
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