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GATE Electrical Engineering (EE) 2022 Solved Paper

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Question : 9

Total: 65

Three bells P, Q, and R are rung periodically in a school. P is rung every 20 minutes; Q is rung every 30 minutes and R is rung every 50 minutes.
If all the three bells are rung at 12:00 PM, when will the three bells ring together again the next time?

5:00 PM
5:30 PM
6:00 PM
6:30 PM

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