engineering recuitment OPSC Assistant Industries Officer Mock Test 2025 Quantitative Aptitude Number System LCM and HCF
Five light buttons blink at the interval of 6 s, 7 s, 8 s, 2 s, 3 s respectively. If they start blinking together, then how many times would they have blinked together in an hour?
1
24
2
22
3
21
4
20