title: Remove every nth element from string
body: <p>How can you remove every nth element of a string?</p>
  
  <p>I'm guessing you would use the <code>drop</code> function in some kind of way.</p>
  
  <p>Like this drops the first n, how can you change this so only drops the nth, and then the nth after that, and so on, rather than all?</p>
  
  <pre><code>dropthem n xs = drop n xs
  </code></pre>