<p>These are both calculus classes, right? So if I took precal but not calculus in high school, would i still be ready for 20ABC since it sounds like the harder one? Im a little confused about the difference. Mainly it seems like the only one that actually gets you anywhere in UCSD is 20ABC. When I took the math placement exam it said I passed and could get into 10ABC. Does that mean that I'm not good enough for 20ABC? it didn't mention 20ABC anywhere on the information about the test so im wondering if you are able to get into 10ABC does that mean you can automatically also get into 20ABC?</p>
<p>I haven't decided on a major...sometimes I wonder if i ever will. but anyway, which would be more useful for an undecided major? </p>
<p>also is math at ucsd super hard? i'm ok at math but not like a genius at it. is it really hard to get an A because of the curve competition?</p>
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<li><p>20 series is designed for math and engineering majors. it's not necessarily "harder," especially if you're of the logic-pondering type. </p></li>
<li><p>10 series is not necessarily a dead-end. my suitemate took 10A-C then declared a chemistry major (which requires 20 series), but it'd be stupidity to make her retake the entire thing -- they just used her 10 series as credit and she continued to 20D without any problem.</p></li>
<li><p>If you're doing well in precalc, there's no reason you can't handle the 20 series. The placement exam is only a suggestion of courses -- obviously if your major requires the 20 series, you'd take the 20 series. Math 10A and 20A both have Math 4(?) or precalc as the prereq, no difference there.</p></li>
<li><p>Undecided major? If you're something like lit and your college doesn't require it, I'm not sure why you're even thinking about calculus. If you're some flavor of biology, 10 series is safe enough. If you're physical sciences/engineering-headed, 20 series is highly encouraged. There's not that much different between the two series in my opinion ... math is math.</p></li>
<li><p>"super hard" is again subjective. People get A's, other people get F's. I don't think your performance in college math will be significantly different from your experience in high school.</p></li>
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