<p>What concept in your anticipated major were you most proud of mastering? </p>
<p>I don’t know how to answer that question because my major is Applied Mathematics and I did not take any class in high school about applied mathematics. I did not learn any concept about this major yet, so how am I supposed to answer this question?</p>
<p>I suggest you refer to what you have studied that is relevant to any type of math.</p>
<p>Applied Math major here too 
I just talked about something I learnt in math that I was really proud of. After all, everything we learn in math today can be used in applied math</p>
<p>thanks! you’re the best!</p>
<p>I am going to choose APPLIED MATH for my major. But i didn’t see the question about “What concept in your anticipated major were you most proud of mastering?” on commonapp. I heard that this question should be answered if you choose math, physics, chemistry, or cs. When i completed the form of Commonapp, I still did not see any supplement like you posted. Pls help me!!!</p>
<p>@JinjinVivi If you chose Applied Math, you can’t do that supplement. It’s only “regular” mathematics majors. </p>
<p>@JinjinVivi Yeah I put regular mathematics as my second choice so those supplement questions popped up</p>