If you get stuck on a practice problem, struggle with it for at least 30 minutes before looking at the hints or solutions. The growth happens during the struggle.
The Mathematical Olympiad is not just a competition; it is a rigorous journey into the depths of logical reasoning and creative problem-solving. For students aiming for the senior section—typically high schoolers eyeing national or international stages—the right resources are the difference between a bronze medal and a gold. One of the most sought-after resources in this domain is the "Lecture Notes on Mathematical Olympiad Courses for Senior Section Vol 1." If you get stuck on a practice problem,
Divisibility, congruences, and Diophantine equations. and Diophantine equations.