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Quantitative Aptitude

Three red lights on the same road start blinking at the same time and blink repeatedly after every 4, 6 and 8 minutes, respectively. How many times will they blink together in an interval of 3 hours, excluding blinking together at the starting moment ?

5

7

6

4

एक ही सड़क पर तीन लाल बत्तियाँ एक ही समय पर टिमटिमाने (blink) लगती हैं और क्रमशः प्रत्येक 4, 6 और 8 मिनट के बाद बार-बार टिमटिमाती हैं। शुरुआती क्षण में एक साथ टिमटिमाने को छोड़कर, वे 3 घंटे के अंतराल में कितनी बार एक साथ टिमटिमाएंगी?

5

7

6

4

View Answer & Solution
Correct Answer: B (7)
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