Art Of Problem Solving Vol 2 2024. Problem solvers discuss and solve challenges together on aops online—one of the largest online math communities in the world. If you are mathematically gifted, and particularly if you are not, this volume will take you beyond the basics into a new level of understanding of and appreciation for mathematical problem.
I used this book to study for the amc and aime. Even though i already knew most of the material, it was great to review it and to see how it could actually be.