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18 July, 22:06

A geometric sequence has a common ratio of 2/9 and the first term is 729 what is the 8th term?

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  1. 18 July, 23:11
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    This is the concept of sequences and series. The formula for geometric series is given by:

    an=ar (n-1)

    where;

    a=first term

    r=common ratio

    n=nth term

    thus the 8th term will be:

    8th=728 * (2/9) ^ (8-1)

    =728 * (2/9) ^7

    =128/6561
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