engineering recuitment FSSAI Assistant Mock Test 2021 Quantitative Aptitude Number System LCM and HCF
7 bells ring at interval of 2, 3, 4, 6, 8, 9 and 12 seconds, respectively. They started ringing simultaneously. How many times will they ring together in 1 hour?
1
51
2
12
3
16
4
24