Question

There are four bells which toll at intervals of 3,7,12 and 14 sec respectively the four bells begin to toll at 12 o, clock how many times will they toll together in 14 minutes?

Answer 1

The intervals between the bells are 3,7,12and14
We have to find its Lcm
After finding we will get 84s as the first together toll.
To find all under 14min ,we have to divide it by 84s
Which will be:- 840/84=10
Ans=10