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by theCodeToGMAT » Thu Jan 02, 2014 8:17 am
For Minute Hand:
60 minutes = 360 degree
1 minute = 6 degree
24 minute = 24 * 6 degree

For Hour Hand:
12 hours = 360 degree
1 hour = 30 degree
60 minutes = 30 degree
1 minute = 1/2 degree
24 minutes = 12 degree

Hence, delta degree = 144 - 12 = 132
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