Problem 1: Multiples of 3 and 5

Q)If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.

Find the sum of all the multiples of 3 or 5 below 1000.

Solution:

If you've googled the solution to this, you better not waste time on more problems.The solution can be found out using this java code:

public class Prob1 {


 public static void main(String[] args) {
 

  int sum=0 ;
  for(int i = 0 ; i < 1000; i++)
  {
   if(i % 5 == 0 || i % 3 == 0 )
    sum += i;
  }
  
  System.out.println(sum);
 }

}