title: What is the meaning of "exclusive" and "inclusive" when describing number ranges?
body: <p>Simple question but, I see exclusive and inclusive when referring to number ranges.</p>
  
  <p>For example, this is a line from an algorithms book:</p>
  
  <blockquote>
    <p>The following function prints the powers of 2 from 1 through n (inclusive).</p>
  </blockquote>
  
  <p>What is meant by this? What makes a number range inclusive or exclusive?</p>