Question

Three alarm clocks ring alarm at regular intervals of 25sec ,35sec and 45 sec, if they first

beep together at 11.40 am., at what time will they beep again together?​

Answer 1

Answer:

lcm of 25sec ,35sec and 45 sec = 1575

time will they beep again together = 11.40 am+ 1575

= 11.40 am+ 1575/60 hr

calculate it to get the required ans.....

i hope it helps