Question 24
A digital clock displays HH:MM from 00:00 to 23:59. For example, at 8:05 am it shows 08:05, and at 9:09 pm it shows 21:09. In one day, how many displays use exactly the four digits 2, 0, 2, 0, in any order?


VTMO · VTMO 2026 - Grade 5 - Semifinal - SET 5 - Self-study
