Question

wap in java to find sum of the series 1+(1+2)+(1+2+3)+(1+2+3+-----+n) and also mention variable description.​

Answer 1

Answer:

import java.util.*;

public class Java{

     public static void main(String []args){

        Scanner in=new Scanner(System.ib);

          int n =in.nextInt();

         int s=0;

        for(int i=1;i<=n;i++){

              s=s+(i*(n-i+1));

          }

           System.out.println(s);

      }

}

Explanation: