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Question
A certain pendulum clock with a 12 h dial happens to gain 1.0 min/day. After setting the clock to the correct time, how long must one wait until it again indicates the correct time?
Options
720 min
720 days
60 days
12 min
MCQ
Solution
720 days
Explanation:
The clock will show correct time after it gains 12 × 60 = 720 minutes in 720 days.
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