Question

if you enter 1 2 3, when you run this program, what will be the output?

import java.util.scanner;

public class test1 {
public static void main(string args) {
scanner input = new scanner(system.in);
system.out.print(\enter three numbers: \);
double number1 = input.nextdouble();
double number2 = input.nextdouble();
double number3 = input.nextdouble();

// compute average
double average = (number1 + number2 + number3) / 3;

// display result
system.out.println(average);
}
}
a 4.0
b 2.0
c 3.0
d 1.0

Explanation:

Step1: Calculate the sum of the three numbers

The three numbers entered are \(1\), \(2\), and \(3\). The sum \(S=1 + 2+3\).
Using basic arithmetic, \(S = 6\).

Step2: Calculate the average

The formula for the average \(A\) of \(n\) numbers \(x_1,x_2,\cdots,x_n\) is \(A=\frac{x_1 + x_2+\cdots+x_n}{n}\).
Here, \(n = 3\) and the sum \(S=6\). So, \(A=\frac{6}{3}\).
Performing the division, \(A = 2.0\).

Answer:

B. 2.0