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Mr. Dubey • 51.62K Points
Coach Reasoning

(A) 160°
(B) 180°
(C) 150°
(D) 190°
Correct Answer - Option(A)
Explanation by: Vinay Kumar
At 9 o’ clock, the hour hand is at 270 degrees from the vertical. In 20 minutes,
Hour hand = 270 + 20*(0.5) = 270 + 10 = 280 (The hour hand moves at 0.5 dpm)
Minute hand = 20*(6) = 120 (The minute hand moves at 6 dpm)
Difference or angle between the hands = 280 – 120 = 160 degrees.

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