⚠️ Beware of "fake" past papers on generic worksheet sites. Authentic HKIMO papers have a distinct layout: a logo, bilingual instructions (English/Chinese), and 4 sections (Logical Thinking, Arithmetic, Number Theory, Combinatorics).
Mathematical difficulty is subjective. A problem can be hard because the numbers are large, or hard because the logic requires a leap of faith. HKIMO problems are almost exclusively the latter. By working through past papers, students develop a "sixth sense" for how an Olympiad problem is structured. You learn that if a calculation is getting too messy, you are likely on the wrong path—Olympiad solutions are usually elegant. hkimo past papers senior secondary
Detailed question papers and solution sets are hosted on sites like Scribd. Examples include: HKIMO 2023 Senior Secondary Final Review & Solutions HKIMO 2020 Senior Secondary Heat Round Paper HKIMO 2019 Senior Secondary Mock Paper Hong Kong Education Bureau ⚠️ Beware of "fake" past papers on generic