A clock is started at noon. By 10 minutes past 5, the hour hand has turned through A) 145° B) 150° C) 155° D) 160°

Angle traced by hour hand in 12 hrs = 360°

Angle traced by hour hand in 5 hrs 10 min. i.e., 31/6 hrs

(360/12 x 31/6)° =155°

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