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VTMO 2026 - Grade 5 - Semifinal - SET 5 - Self-study Question 24

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

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?

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