Question 15
How many integers $n$ make $|n^2-2n-3|$ prime?
HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 01 Question 15
HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 01
HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 01