title: How to return null in Javascript function
body: <p>Learning Javascript functions, and having trouble with the problem below.</p>
  
  <p>Modify this function so that if it’s called with 1 or 0 arguments, it returns <code>null</code>.</p>
  
  <pre><code>function divide(num1, num2) {
      return num1 / num2;
  }
  let num1 = null;
  let num2 = null;
  let answer = divide(1,1)
  console.log(answer);
  </code></pre>