Many centers give past papers exclusively to enrolled students. If you are desperate, a short-term "exam prep" package often includes 3-5 years of Senior Secondary papers.
There are specific books available in Hong Kong bookstores (like Commercial Press or Swindon) that compile Olympiad problems. hkimo+past+papers+senior+secondary
The primary organizers are the Hong Kong Mathematical Society and the Hong Kong Academy for Gifted Education (HKAGE). Many centers give past papers exclusively to enrolled
Unlike public exams, HKIMO past papers are not centralized in a government database. You have to rely on three main sources: The primary organizers are the Hong Kong Mathematical
Searching for hkimo+past+papers+senior+secondary is useless without a strategy. Follow this timeline:
The HKIMO is intentionally time-pressured. Practicing with a stopwatch helps you learn which problems to skip initially and which to solve first. Most top scorers aim for 80–90% accuracy on the first 15 questions before tackling the final few challenging ones.