<p>On the economics page it says that extension classes can be used as prereqs, but 1a and 1b do not count. Do 16a and 16b count?</p>
<p>Just to be sure you end up taking classes that unquestionably count toward the major, I’d call or email the economics advisers and get their input.</p>
<p>Extension courses prefixed with XB are equivalent to regular courses of the same course numbers, while those prefixed with X are not.</p>
<p>[Information</a> and Policies — UC Berkeley Extension](<a href=“http://extension.berkeley.edu/info/grades.html]Information”>http://extension.berkeley.edu/info/grades.html)</p>
<p>None of the current Extension math offerings are XB prefixed:</p>
<p>[Mathematics</a> and Statistics courses - UC Berkeley Extension](<a href=“http://extension.berkeley.edu/catalog/math.html]Mathematics”>http://extension.berkeley.edu/catalog/math.html)</p>
<p>Hm. So maybe I could take the X classes this fall/spring and then take the regular classes on campus next summer. Theoretically, they should be very easy for me next summer and the review of calculus would be good for me. I could take 16a, 16b, and a calculus based statistics course during the summer and then in the fall i could take 100a to satisfy all of the prereqs. This seems doable and smart, right? I would be taking self paced precalculus thru extension before taking online 16a.</p>
<p>By the way, the reason I am not taking calc at a community college is because it requires too many prereqs and I wouldn’t have time to do them all. But all I really need for 16a-b is pre calculus, right?</p>
<p>Use the on-line placement test here:</p>
<p>[Calculus</a> Diagnostic Placement Exam | Department of Mathematics at University of California Berkeley](<a href=“http://math.berkeley.edu/courses/choosing/placement-exam]Calculus”>http://math.berkeley.edu/courses/choosing/placement-exam)</p>
<p>to determine your readiness to take Math 16A or 1A.</p>
<p>Thanks so much for that!</p>