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7 August, 02:28

Write an equation for the nth term of the geometric sequence 5, 10, 20, 40

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  1. 7 August, 02:57
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    First term: 5

    Factor by which next term is found : 2

    term = 5*2^ (n-1)

    Check: for the fourth term, 5*2^ (4-1) = 40
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