<p>What's the difference?</p>
<p>Probably not much difference, since the course description says:</p>
<p>"Credit option: Students will receive no credit for 70 after taking Mathematics 55."</p>
<p>The CS version is harder, from what I hear.</p>
<p>cs70 is more in-depth (yes, harder), so it's probably more useful if youre intending on doing CS stuff. math 55 is fine otherwise.</p>