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Question

The angle between the minute hand and the hour hand of a clock when the time is 7:20 a.m. is

A
120
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B
75
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C
90
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D
100
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Solution

The correct option is D 100
7 hr 20 min=7+2060=223 hr
Angle traced by hour hand in 7 hr 20 min=(223×36012)=220
Angle traced by the minute hand in 20 min=(36060×20)=120

Hence, required angle between the two hands =220120=100

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