Question

write a java code.

Write a program using loops to compute the sum of the 30 terms of the series below.

91/(3 + 2 + 2) + 92/(4 - 4 + 5) + 93/(5 + 6 - 8) + 94/(6 - 8 + 11) + 95/(7 + 10 + 14) + 96/(8 - 12 - 17) + . . . .

Output:

Term Ratio Sum

1 13 13

2 18.4 31.4

etc etc

Answer 1

public class TermSum {

    public static void main(String[] args) {
        double term, sum = 0, num = 91;
        int n1 = 3, n2 = 2, n3 = 2, sign1, sign2;
        System.out.println("Term Ratio Sum");
        for (int i = 1; i <= 30; i++) {
            if (i % 2 == 0) {
                sign1 = -1;
            } else {
                sign1 = 1;
            }
            if (i % 3 == 0) {
                sign2 = -1;
            } else {
                sign2 = 1;
            }
            term = num / (n1 + sign1*n2 + sign2*n3);
            sum += term;
            n1++;
            n2 += 2;
            n3 += 3;
            num++;
            System.out.println(i + "\t" + term + "\t" + sum);
        }
    }
}