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Yesterday, 17:12

The sum of an 84 number series is - 7980 what is the sum of the first and last the numbers

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  1. Yesterday, 20:08
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    Since, it is not mentioned which kind of series is it, I am assuming it to be an A. P. and will solve for the Same:

    Sum = Number of terms (First Term+Last Term) / 2

    First Term+Last Term = - 7980*2/84 = - 190
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