title: Return list of items in list greater than some value
body: <p>I have the following list</p>
  
  <pre><code>j=[4,5,6,7,1,3,7,5]
  </code></pre>
  
  <p>What's the simplest way to return <code>[5,5,6,7,7]</code> being the elements in j greater or equal to 5?</p>