<p>From what I gather in this thread, 3s and 3l seems useless. I think someone posted that you gain the knowledge of 3s/3l within the first few weeks of 61A. </p>
<p>And if you read 2 posts above yours, 10 is like a history class.</p>
<p>From what I gather in this thread, 3s and 3l seems useless. I think someone posted that you gain the knowledge of 3s/3l within the first few weeks of 61A. </p>
<p>And if you read 2 posts above yours, 10 is like a history class.</p>