[PSSSB Driver/Operator, 2023]

9. The traffic lights at three different road crossings change after every 48 seconds, 72 seconds and 108 seconds, respectively. If they all change simultaneously at 8.20:00 hrs, then they will again change simultaneously at.

1. 8:27:12 h

2. 8:27:24 h

3. 8:27:36 h

4. 8:27:48 h

Correct Answer :

8:27:12 h