Question

What is the answer for the second sub Question
Please Answer me fast.
This is related to computer applications class 9 icse please dont spam anything in the answer.​

Answer 1

Answer:

import java.util.Scanner;

public class KboatSeriesMenu

{

public static void main(String args[]) {

Scanner in = new Scanner(System.in);

System.out.println("1. Sum of the series");

System.out.println("2. Display series");

System.out.print("Enter your choice: ");

int choice = in.nextInt();

switch (choice) {

case 1:

int sum = 0;

for (int i = 1; i <= 20; i++) {

int term = (int)Math.pow(2, i);

if (i % 2 == 0)

sum -= term;

else

sum += term;

}

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

break;

case 2:

int term = 1;

for (int i = 1; i <= 5; i++) {

System.out.print(term + " ");

term = term * 10 + 1;

}

break;

default:

System.out.println("Incorrect Choice");

break;

}

}

}

Explanation:

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