What’s the common ratio of this sequence? 3, 21, 147

asked May 18, 2020 161k views

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What’s the common ratio of this sequence?
3, 21, 147

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Answer:

r = 7

Explanation:

The common ratio r of a geometric sequence is

r =
(a_(2) )/(a_(1) ) =
(a_(3) )/(a_(2) ) , that is

r =
(21)/(3) =
(147)/(21) = 7

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