Alarm clock
The old watchmaker has a unique digital alarm in its collection that rings whenever the sum of the alarm's digits equals 21. Find out when the alarm clock will ring. What is their number? List all options.
Correct answer:
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Do you want to convert time units like minutes to seconds?
Would you like to compute the count of combinations?
Do you want to convert time units like minutes to seconds?
Would you like to compute the count of combinations?
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