At what time between 3 & 4 Hour, Minute hand & Hour hand will coincide? 

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NPCIL Assistant Grade-1 (HR/F&A/C&MM/Steno Grade-I) Official Paper-II (Held In: 2022)
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  1. \(3:16\frac{4}{11}\)
  2. \(3:15\frac{4}{11}\)
  3. \(3:16\frac{3}{11}\)
  4. 3:15

Answer (Detailed Solution Below)

Option 1 : \(3:16\frac{4}{11}\)
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Detailed Solution

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Given: Time between 3 & 4 Hour

At 3 o’clock the hour hand is at 3 and the minute hand is at 12 i.e., they are minutes apart. If they are to be together (i.e. at 3:15), the minute hand must move 15 minutes over the hour hand.

As we know 55 min are gained in 60 min.

(Note: In a complete hour, hour hand moves 5 minute and minute hand moves 60 minutes which makes minute hand 60 - 5 = 55 minute ahead hour hand always).

Therefore, 15 min difference will be gained in = [(60 ÷ 55) × 15] = 180 ÷ 11 = \(16 {4 \over 11} \) minute past 3.

Thus, "Option 1" is the correct answer.

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