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17 June, 22:10

Four bells ring at intervals of 3, 7, 12 and 14 minutes respectively. All four rang together at 4:00a. m. At what time will they ring together again?

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  1. 17 June, 22:15
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    Basically ur just looking for the LCM (lowest common multiple) of all of these numbers.

    3,7,12,14 ... lowest number that all 4 of these numbers go into evenly is 84.

    so they will ring together next in 84 minutes (1 hr 24 minutes) making it 5:24 a. m.
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