Question

Six bells commence tolling together and toll at intervals 2, 4, 6,8,10, and 12 min. resp. After how many minutes they will toll together?

Answer 1

Explanation:

The least common multiple (LCM) of 2, 4, 6, 8, 10, and 12 is 120. Thus, the bells toll together every 120 seconds (or 2 minutes), so in 30 minutes they will toll simultaneously 30/2 = 15 times

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Answer 2

Answer:

first prime factorisation and then the lcm through which we will find 120 min (2 hrs)

ATQ

30 hrs

therfore 30/2=15 times

and first all six bells commence together so

16 times