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16 November, 13:16

What is the 12th term of the geometric sequence? 5, 15,15

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  1. 16 November, 13:29
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    S12=855735

    Step-by-step explanation:

    if the 3rd term is 45 then,

    formula: Sn=ar^n-1

    S12=5*3^12-1

    S12=5*3^11

    S12=5*177147

    S12=855735
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