mikethegerman85 Posted May 18, 2009 Share Posted May 18, 2009 Ist there a formula to solve for the sum of integers lets say between 232-297 inclusive? how does it change if its exclusive? how does it change if its only even or odd integers? thank you Quote Link to comment Share on other sites More sharing options...
bannabanna Posted May 18, 2009 Share Posted May 18, 2009 it should be Sum = N x (n+1) + n x (n+1)/2 Quote Link to comment Share on other sites More sharing options...
mikethegerman85 Posted May 18, 2009 Author Share Posted May 18, 2009 What does N and n correspond to? Quote Link to comment Share on other sites More sharing options...
12rk34 Posted May 18, 2009 Share Posted May 18, 2009 Ist there a formula to solve for the sum of integers lets say between 232-297 inclusive? how does it change if its exclusive? how does it change if its only even or odd integers? thank you Natural numbers are 1, 2, 3, 4, ... Sum of first n natural numbers = n*(n+1)/2 Sum of 232 to 297 = Sum of first 297 natural numbers - sum of first 231 natural numbers = (297*298/2) - (231*232/2) = 297*149 - 231*116 Now you can calculate the final figure. :) Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.