write a program in java to find the sum of the given series,a)s=a*2+a*3+...a*20
Answers
Answered by
0
Answer:
import java.io.*;
class GFG
{
public static void main (String[] args)
{
double n = 20, a = 2;
System.out.println(sumOfSeries(a, n));
}
static double sumOfSeries(double a,double n)
{
double res = 0, prev = 1;
for (int i = 2; i <= n; i++)
{
prev = a * i ;
res = res + prev;
}
return(res);
}
}
Answered by
2
Answer:
Class sum
{
public static void main(int a)
{
int s=0;
for(int i=2;i<=20;i++)
{
s=a*i;
System.out.print("sum="+s);
}
}
}
Explanation:
I have made is Simple If you want it with Buffered Redader
then write the Syntax of Buffered Reader and assign 'a'
as
a=br.readLine()
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