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20 February, 12:31

What is the common ratio of the sequence 3, 21, 147, ...?

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  1. 20 February, 15:07
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    The common ratio is a constant found in geometric sequences, denoted r in the equations for geometric sequences, when any term is divided by the term preceding it. In this case the common ratio is:

    147/21=21/3=7=r

    So 7 is the common ratio.
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