Teaching Rajasthan 3rd Grade REET Mains (Level I & II) Mock Test Quantitative Aptitude Number System LCM and HCF
Three bells start ringing together at 8∶35 am. If they ring after 12 s, 15 s and 18 s respectively each time, the next time they will toll together at-
1
8∶38 am
2
8∶40 am
3
8∶42 am
4
11∶30 am