Four bells ring at intervals of 9,12,15 and 18 seconds respectively th – InterviewSolution

1.	Four bells ring at intervals of 9,12,15 and 18 seconds respectively they begin by ringing together after how will they all ring together again
Answer» so to solve it we NEED to take out their LCM and the answer will be 180 and convert it in to minutes so the answer will be 3 minutes :)

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