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8 April, 22:05

What is the sum of the geometric sequence - 4 24 - 144 if there are 8 terms

-959,781

29,637

26,661

959,780

+5
Answers (1)
  1. 8 April, 22:06
    0
    The correct answer is 959,780.

    In order to find this, we need to first find all the first 8 terms of the series. Each term is the previous term multiplied by - 6. This gives us the following terms.

    -4

    -4*-6 = 24

    24*-6 = - 144

    -144*-6 = 864

    864*-6 = - 5,184

    -5,184*-6 = 31,104

    31,104*-6 = - 186,624

    -186,624*-6 = 1,119,744

    Now we add all those together and get our answer.

    -4 + 24 - 144 + 864 - 5,184 + 31,104 - 186,624 + 1,119,744 = 959,780
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