title: Modulus and remainders - Javascript
body: <p>Sorry for the two questions in such a short amount of time lol
  Why do 1%15, 3%15, 5%15 have 0 remainder?
  I may be rusty on math but I thought they should have remainders.</p>
  
  <p>May be unnecessary but here is the code:</p>
  
  <pre><code>for (i = 1; i &lt;= 20; i++) {
      if (i % 15 === 0) {
          console.log("FizzBuzz");
      }
      else if (i % 3 === 0) {
          console.log("Fizz");
      }
      else if (i % 5 === 0) {
          console.log("Buzz");
      }
      else {
          console.log(i);
      }
  }
  </code></pre>
  
  <p>and output:</p>
  
  <pre><code>**FizzBuzz** 
  2
  **FizzBuzz** 
  4
  **FizzBuzz**
  Fizz 
  7 
  8 
  Fizz 
  Buzz 
  11 
  Fizz 
  13 
  14 
  FizzBuzz 
  16 
  17 
  Fizz 
  19 
  Buzz
  </code></pre>