Question

5 bells commence together in a interval of 4 , 6 , 5 , 9 , 10 see respectively . in 30 min how many time they toll together
plz give the answer
​

Answer 1

Answer

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.