Question

write a program to print n terms of series 1, (1+2),(1+2+3),....

Answer 1

⛤Hey There⛤
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Write a program to print n terms of series 1, (1+2),(1+2+3),....

import java.util.*;

 

class 1855 {

     

    // Function to find sum of given series

    static int sumOfSeries(int n)

    {

        int sum = 0;

        for (int i = 1 ; i <= n ; i++)

            for (int j = 1 ; j <= i ; j++)

                sum += j;

        return sum;

    }

     

    /* Driver program to test above function */

    public static void main(String[] args)

    {

         int n = 10;

         System.out.println(thesumOfSeries(n));

         

    }

}

Answer 2

Sum of the series S=1+(1+2)+(1+2+3)+(1+2+3+4)+….+(1+2+3+…+n) where the value of ‘n’ is given by the user.

 Input : n = 5 Output : 35 Explanation : (1) + (1+2) + (1+2+3) + (1+2+3+4) + (1+2+3+4+5) = 35 Input : n = 10 Output : 220 Explanation : (1) + (1+2) + (1+2+3) + .... +(1+2+3+4+.....+10) = 220