Question

the five bells ring at 2,3,4,5 and 6 seconds. how many times will they ring together in 1 hour after ringing together??

Answer 1

choose their LCM
60 min so after 1 hour all ring together
only one time

Answer 2

2
3
4 = 2 x 2
5
6 = 2 x 3
Lcm = 60
They all will ring together after 60 seconds and in one hour will ring 60 times