Series of Natural Numbers


 
 
Concept Explanation
 

Series of Natural Numbers

 

Sum of first n natural numbers is given by

                     S_n =frac{n(n+1)}{2}.

Sum of the squares of first n natural numbers is given by

                    S_n=frac{n(n+1)(2n+1)}{6}.

Sum of the cubes of the first n natural numbers is given by

                      S_n=left [ frac{n(n+1)}{2} right ]^2

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