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Please Just read these 2 formulas , After u can try
1) sum of first n natural numbers is = n*(n+1)/2
2) sum of first n natural numbers idiviual squares is : : n*(n+1)*(2*n+1)/6
ex: 1^2+2^2+3^2+.......+n^2
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Project Euler #6: Sum square difference
You are viewing a single comment's thread. Return to all comments →
Please Just read these 2 formulas , After u can try
1) sum of first n natural numbers is = n*(n+1)/2
2) sum of first n natural numbers idiviual squares is : : n*(n+1)*(2*n+1)/6