Three bell rings at intervals of 15,20,30 minutes if they ring at 11am then at what time they ring together again
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LCM of 15 ,20, 30 is = 2 × 2 × 3 ×5 = 60 minutes
60 minutes = 1 hour
the three bell will ring together again at 11 hour + 1 hour = 12 p.m.
60 minutes = 1 hour
the three bell will ring together again at 11 hour + 1 hour = 12 p.m.
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