rookie0181 rookie0181
  • 23-08-2018
  • Mathematics
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The sum of an 84 number series is -7980 what is the sum of the first and last the numbers

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Shaswat221005
Shaswat221005 Shaswat221005
  • 23-08-2018
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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