title: Postfix Expression?
body: <p>What is the value of the postfix expression <code>6 3 2 4 + - *</code>?</p>
  <p>Options are:</p>
  <p>A. Something between -15 and -100</p>
  <p>B. Something between -5 and -15</p>
  <p>C. Something between 5 and -5</p>
  <p>D. Something between 5 and 15</p>
  <p>E. Something between 15 and 100</p>
  <br>
  By my calculations, I keep getting 18 as the answer, which would be E, but the answer is A.
  <p>Am I missing something?</p>