1.

The traffic lights at three different road crossings change after 24 seconds, 36 seconds and 54 seconds, respectively. If they all change simultaneously at 10 : 15 : 00 AM, then at what time will they again change simultaneously ?

Answer»

`10:16:54`
`10:18:36`
`10:17:02`
`10:22:12`

ANSWER :B


Discussion

No Comment Found