find the sum of all the numbers 1 to 1000

Answer Posted / zach

I use a different formula I made up that works for any set of consecutive numbers e.g. 21-639. Highest number is n, lowest number is x
------- (n+x)*(n/2)
--------(1+1000)*(1000/2)
--------(1001*500

Is This Answer Correct ?    11 Yes 3 No



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