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Six bells commence tolling together and toll at interval of 2, 4 , 6, 8 , 10 , 12 minutes respectively . In 30 hours , how many times do they toll together ?

A

15 times

B

16 times

C

14 times

D

10 times

Text Solution

Verified by Experts

The correct Answer is:
B
LCM of 2,4,6,8,10,12=120
After every 2 hours they toll together ,
Required number of times ` ( 30/2 +1)` time = 16 times.
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