Find all integers n such that when the clock strikes n o'clock, the acute angle between the hour and minute hands is 90 degrees. Enter your answer as a comma-separated list.
Find all integers n such that when the clock strikes n o'clock, the acute angle between the hour and minute hands is 90 degrees. Enter your answer as a comma-separated list.
When the clock striks the hour, then the minute hand is pointing at the 12.
The positions that the hour hand can be in to make a 90o angle are at the 3 or the 9.
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