<p>well the thing is most people take 141 so they can tell you it’s “killer”. I don’t know how hard 151 is but it’s probably at least just as hard. The difference is that they shove calc 1, calc2 and some of calc 3 into the 150/151 program. 140 is calc 1 and 141 is calc 2. If you don’t plan on taking any calc 3, then you really don’t need to take 150/151.</p>