A digital 12 hour clock falls behind 10 minutes each day. How many days will it take to reach a point where the clock will indicate the correct time?

A 36
B 40
C 72
D 90

Correct Answer: 72

it falls behind 10 mins each day so to show correct time it should lose 12 hours(720 mins) if it has only 12 hour divisions no. of days = 720/10 = 72 so in 72 days it would lose 720 mins or 12 hours after 72 days it would show the time correctly.
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#গণিত #ঐকিক নিয়ম (Unitary method) #Rajshahi Krishi Unnayan Bank #Rajshahi Krishi Unnayan Bank - Senior Officers - 08.01.2010

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