All light was seen at interval if 30 seconds It was seen of the fisrt line at 1hr.54 min 50 seconds a.m and the last time at 3 hrs 17 min 49 seconds a.m. How many times was the light seen ?

All light was seen at interval if 30 seconds It was seen of the fisrt line at 1 hr.54 min 50 seconds a.m and the last time at 3 hrs 17 min 49 seconds a.m.How many xx was the light seen?

A light was seen at intervals of 13 seconds.It was seen for the first time at 1 hr.54 min.50 secs.a.m.and the last time at 3 hrs.17 min.49 secs.a.m.How many xx was the light seen? (a) 360 (b) 375 (c) 378quad (d) 384

A light was seen regularly at an interval of 13 seconds. It was seen for the first time at 1 hour 54 minutes 50 seconds (a.m.) and the last time at 3 hours 17 minutes 49 seconds (a.m.). How many times was the light seen?

There are n A.M.'s between 5 and 35. If second mean : last mean = 1 : 4, then find n.

Kavita decorated her home beautifully with lights on Diwali. She had three strings of blinking lights with different light colours. The lights of first string remain off for 3 seconds, the second string for 5 seconds and the third string for 6 seconds. The time interval after which lights of the three strings will glow again after switching them on at the same time is:

The traffic lights at three different road crossings change after every 48 seconds, 72 seconds and 108 seconds . If they start changing simultaneously at 8 a.m., after how much time will they change again simultaneously ?