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March 27, 2017

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Find the sum of the first 27 terms of the following sequence:

10, 18, 26 . . .

  • sequence math - ,

    For an AS
    Sum(n) = (n/2)(2a + d(n-1))

    in your case
    Sum(27) = (27/2)(20 + 26(8) )
    = ...

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