railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Quantitative Aptitude Number System LCM and HCF
The traffic lights at 3 different road crossings change after every 48 sec, 72 sec and 108 sec, respectively. If they all change simultaneously at 8∶20 a.m., then at what time will they next change again simultaneously?
1
8∶27∶12 a.m.
2
8∶33∶32 a.m.
3
9∶12∶18 a.m.
4
8∶40∶14 a.m.