Question 5
How many integers $x$ make both $x+7$ and $2x+9$ two-digit numbers?
HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 05 Question 5
HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 05
HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 05