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What is the common ratio of the sequence -2,6,-18,54

What is the common ratio of the sequence -2,6,-18,54
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2 votes
What is the common ratio of the sequence -2,6,-18,54

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User Andrey Korneyev
by
8.0k points

1 Answer

5 votes
common ratio, r is found by dividing the next term by the previous term

r =
(6)/(-2) = -3
you can see this value is true for any consecutive pairs of terms
also, multiply by -3 to get the next term
answered
User Virak
by
8.7k points
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