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13 November, 23:40

Find the 7th term of the geometric progression which begins:

2, - 6, 18 ...

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Answers (1)
  1. 14 November, 00:08
    0
    a7=1458

    Step-by-step explanation:

    2; - 6; 18 ... a geometric progression

    a1=2; a2=-6; a3=18

    r=a2/a1=-6/2

    r = - 3

    a7=a1*r⁶

    a7=2 * (-3) ⁶=2*729

    a7=1458
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