Five bells ring together at the intervals of 3, 5, 8 , 9 and 10 seconds . All the bells ring simultaneously at the same time. They will again ring simultaneously after:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 6 minutes.
To find the simultaneous time of writing of five bells we have to find out the LCM
LCM(3, 5, 8, 9, 10) = 360
Thus they will ring again simultaneously after 360 seconds i.e. 6 minutes.