<p>After completing Math 10B this summer, I feel like the 10 series is not remotely challenging enough for me, therefore I have decided to switch into the 20 series. Only problem is, I have no idea how to do this. Any input regarding this would be much appreciated!</p>
<p>Just sign up for 20B after 10B.
I had the option to take 10C or 20B last semester.</p>