Five bells begin to toll together and toll
respectively at intervals of 6,7,8,9 and 12 seconds.
How many times they will toll together
in one hour, excluding the one at the start?
6
7
5
2
Explanation:
L.C.M. of 6,7,8,9 and 12
= 2x2x3x7x2x3 = 504
ie, The bells will toll together after each 504
seconds. In one hour, they will toll together
(60*60)/504= 7 times
L.C.M. of 6,7,8,9 and 12
= 2x2x3x7x2x3 = 504
ie, The bells will toll together after each 504
seconds. In one hour, they will toll together
(60*60)/504= 7 times