<p>I’m fairly certain that 103 isn’t actually required for 104. If you think you’re capable of 104, you can sign right up for it. I would only drop down into 103 if you think 104 is over your head.</p>
<p>whaat: Most Wharton classes will refresh you on the relevant math as you cover it. Yeah, you’ll have learned it in a Math or Stat class, but the wharton class will reteach you the relevant stuff. It’s only in upper level, really quant-heavy stuff that I’ve actually felt pressed to remember math from other courses. (And by that point, you know what you’re getting into).</p>