Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 Quantitative Aptitude Number System LCM and HCF
Six bells commence tolling together and toll at intervals of 3, 6, 9, 12, 15 and 18 seconds respectively. In 30 minutes, how may times do they toll together?
1
4
2
10
3
11
4
5