state gov OSSSC RI, ARI, AMIN, SFS, ICDS Supervisor Combined Mock Test 2023-25 Quantitative Aptitude Number System LCM and HCF
Four bells ring together and then ring at intervals of 3 seconds, 4 seconds, 6 seconds and 7 seconds, respectively. After what interval (in seconds) will the bells again ring together?
1
126
2
63
3
42
4
84