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12 July, 15:08

Find S15 for the geometric series 72 + 12 + 2 + 1/3 + ...

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  1. 12 July, 18:04
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    S1 = 72

    S2 = 12 = 72 * (1/6)

    S3 = 2 = 72 * (1/6) ^2

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    S15 = 72 * (1/6) ^14 = 9.18*10^ (-10)
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