Teaching CTET (Paper 1 & Paper 2) Mock Test Series 2025 Quantitative Aptitude Number System LCM and HCF
Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together?
1
4
2
10
3
15
4
16