Ask HN: What books would you give a 16-year old interested in Math?
My son is going to turn 16 in a week. He is a junior (11th grade) in a US High School, and loves math. He participates actively in various math competitions (AMC, ARML and the like), in which he does reasonably well if not at the top. He is taking Calculus now and would like to pursue math major in college.I want to give him three (or more) math-related books as his birthday present, books that...