Clock hands overlap

MediumBrainteasers~4m

How many times in a 12-hour period do the hour and minute hands of an analog clock exactly overlap?

Show hints (2)+
  1. How many laps does the minute hand gain on the hour hand in 12 hours?
  2. Overlaps occur every 12/11 hours, not exactly every hour.

Answer

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11

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Asked at: Jane Street, IMC

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