railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Number System LCM and HCF
3 bells rings at an regular interval of 45 min, 1 hour 30 min and 2 hour respectively. If all three bells first rings at 12:00 A.M, when they will ring together again?
1
06:00 A.M
2
06:30 A.M
3
06:00 P.M
4
09:00 A.M