title: What is the difference between these two comparisons?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/9508518/why-are-these-numbers-not-equal">Why are these numbers not equal?</a>  </p>
  </blockquote>
  
  
  
  <pre><code>0.9 == 1-0.1 &gt;&gt;&gt; TRUE
  0.9 == 1.1-0.2 &gt;&gt;&gt; FALSE
  </code></pre>