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20 December, 11:27

What is the sum of the sequence 46+47+48+49 + ... + 115

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Answers (2)
  1. 20 December, 13:05
    0
    46 + (n-1) 1=115

    46+n-1*1=115

    46+n-1=115

    n+45=115

    n=70

    Plug back into equation to check.

    46 + (70-1) 1=115

    46+69=115
  2. 20 December, 13:52
    0
    46+47+48+49+115 = 305
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