Posted by: Aviator December 19, 2007
Classic interview brainteasers
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Hour hand moves at the rate of 30 (= 360/12) degrees per hour. So, hour hand moves 30/4 = 7.5 degrees away in 15 minutes from 3 o'clock position.  Hence, the angle between hour and minute hand at 3:15 will be 7.5 degrees.
I learnt a new thing today!
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