Before you rush to download a PDF, consider this:
This section trains students to think logically about counting and arrangements. Counting Principles (Permutations and Combinations).
A curated selection of challenging problems designed to test your comprehension and build mathematical endurance. 🧠 Key Mathematical Pillars Covered in Volume 1 Before you rush to download a PDF, consider
Unlike standard school textbooks that prioritize rote memorization, Xu Jiagu’s lecture notes focus heavily on .
Highly focused and logical; topics are narrowly defined, which helps in mastering one skill at a time. Problem Quality 🧠 Key Mathematical Pillars Covered in Volume 1
Never read an Olympiad book passively. Keep a notebook handy. When looking at a solved example, cover the solution first. Give yourself at least 20 to 30 minutes to crack the problem on your own before reading the author's approach.
Note: Always ensure you are accessing authorized materials from reputable sources. Conclusion Keep a notebook handy
| Pros | Cons | | :--- | :--- | | (often freely shared by alumni) | Legality issues – many PDFs circulating are unauthorized scans. | | Searchable text (if OCR'd) for quick lemma lookup | Missing pages or poor formatting from low-quality scans. | | Portable – study on a tablet during commutes | No physical copy – flipping between chapters is harder. | | Immediate download | Ethical concern – authors and publishers rely on sales to produce more volumes. |
If you are a serious high school student aiming for a high level of success in national or international Olympiads, or a teacher preparing such students, this book is an indispensable resource.
The exercise sets at the end of each chapter are where the real growth happens. Categorize your progress: : You have mastered the concept. Solved after a struggle : You are building stamina.
: Includes competition questions from diverse countries, including China, Russia, the USA, and Singapore Detailed Solutions