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Mathematics 21 Online
OpenStudy (anonymous):

What is the sum of the geometric sequence -4, 24, -144, ... if there are 6 terms? -159,963 26,660 26,661 159,963

OpenStudy (anonymous):

It appears that the pattern is: Multiply by -6... After continuing the pattern three more times, I obtain the value of 31104. I may be wrong though...

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