Civil Services HPPSC (Himachal Pradesh) HPAS Mock Test 2021 Quantitative Aptitude Number System LCM and HCF
5 bells ring simultaneously at intervals of 5, 6, 8, 9 and 10 seconds. All the bells start ringing simultaneously. When will they play together next time:
1
5 minutes later
2
9 minutes later
3
8 minutes later
4
6 minutes later