Brain Teasers & Mental Math
Clock angle: how many degrees does the hour hand move in one minute, and how many times per day are the hands exactly overlapping?
Model answer
Hour hand: 0.5° per minute (30° per hour ÷ 60).
Overlaps per day: 22 times. The hands coincide every 12/11 hours ≈ 65.45 minutes, not every 60. In 12 hours they overlap 11 times (the minute hand…
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