How to calculate the sum (1+2)+(2+3)+(3+4)+...(2012+2013)+(2013+2014)?
1 Answer
Feb 19, 2018
Explanation:
This sum has
#((1+2)+(2013+2014))/2 = 2015#
So the sum is:
#2013 * 2015 = 2014^2-1 = 4056195#
