Question

How to find sum of the first N even numbers in Java

Answer 1

public class SumOfEvenNumbers {
    public static void main(String[] args) {
        int N = 5;

        int sum_even = N * (N + 1);

        System.out.println("The sum of the first " + N + " even numbers is: " + sum_even);
    }
}

// 2 + 4 + 6 + 8 + 10 = 30


/*
run:

The sum of the first 5 even numbers is: 30

*/

 

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