RRB NTPC CBT-1 practice question
Three bells ring at intervals of 9, 4, and 5 minutes respectively. If they all ring together at 12:00, after how many minutes will they ring together again?
From a RRB NTPC CBT-1 Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (B) 180 minutes
They will ring together again after L.C.M of 9, 4, 5 = 180 minutes.
हिंदी में प्रश्न
तीन घंटियां क्रमशः 9, 4, और 5 मिनट के अंतराल पर बजती हैं। यदि वे सभी 12:00 बजे एक साथ बजती हैं, तो वे फिर से कितने मिनट बाद एक साथ बजेंगी?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (B) 180 minutes
They will ring together again after L.C.M of 9, 4, 5 = 180 minutes.
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