Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10, and 12 seconds respectively. after how many seconds, will they toll together again?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 120.
LCM of 2, 4, 6, 8, 10 and 12 = 120 sec
So, they toll together again after 120 seconds