@NASA2014 Good luck to you in your future pursuits of Applied Math. As of now, my kid prefers Pure Math, mainly Algebraic Topology, and I was told Algebra goes easier for him than Geometry. His boss makes him work primarily as an algebraist. He took Math GRE last year, only once (shortly after turning 16 and before he took course that followed baby Rudin’s book), and yes, admittedly, he could have done better (got 86% score). He was disappointed, he said that all the prep stuff he was able to find (including past years) was easier than the actual exam. As for baby Rudin book - I assume it sounds easy for him, but look, - I am not babysitting his homeworks, I have no idea how many problems he solves or whatever. In general, I am only involved in helping with administrative stuff - like keeping track of where GRE scores are sent (after all, I am the one paying for every “sent”). I keep clear of the actual heavy math stuff - he has his coauthors and his boss for that.