SOLUTION: Find the sum of 1+2+3+4+5+…+24+25

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Question 322314: Find the sum of 1+2+3+4+5+…+24+25
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Sn = sum of series = N/2 (a1+an)n is the nth. term
25/2 (1+25)
=25*26 / 2
=325