Question 22
How many four-digit numbers have only even digits?
HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 02 Question 22
HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 02
HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 02