lili1216ana2007 lili1216ana2007

30-01-2021
Mathematics

contestada

The sum of the first n natural numbers is 1/2n(n
+ 1). If the sum is
78, find the value of n.

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rashmikushwahask rashmikushwahask

30-01-2021

sorry for that but this is right solution I have solve it now

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