Why rely on someone else’s collection? You can build a superior, personalized 1,000-problem PDF using Google’s advanced features:
Many problem sets are still under copyright. However, official IMO problems are publicly released and free to redistribute. National Olympiad problems (e.g., from India’s INMO or China’s CMO) are often published in open-access journals. The PDFs you find that combine these are typically in a legal gray area. For ethical practice, use them for personal study, not commercial redistribution. When possible, support the authors (like Andreescu, Kedlaya, or Feng Zuming) by purchasing official printed compilations. 1000 mathematical olympiad problems pdf google
There are famous PDFs compiled by Vietnamese and Bangladeshi mathematical societies often titled "1000 Selected Problems in High School Mathematics." Why rely on someone else’s collection
You can combine public domain or permitted problems into one personal PDF. You can combine public domain or permitted problems