Question

(Bonus Question) 12. Write a program that wil find the result according to the following equation result - +- Where n is an integer value the user will enter from keyboard.

Answer 1

FactSumSeriesTest.java

import java.util.Scanner;

public class FactSumSeriesTest {

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

System.out.println("Enter n value:");

int n = scan.nextInt();

double sum = 0;

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

sum = sum + i/(double)fact(i);

}

System.out.println("Sum = "+sum);

}

public static int fact(int n){

int p = 1;

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

p*=i;

}

return p;

}

}

Output:

Enter n value:
5
Sum = 2.708333333333333