AP Police Constable practice question
A museum's antique clock strikes 9 times in 26 seconds, taking an equal amount of time between any two consecutive strikes. How many seconds will it take to strike 6 times?
From a AP Police Constable Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (C) 16.25 seconds
When a clock strikes N times, there are only (N-1) gaps (intervals) between the strikes, not N. Here striking 9 times takes 26 seconds, so the number of intervals is (9-1) = 8, giving each interval = 26/8 = 3.25 seconds. To strike 6 times, the number of intervals is (6-1) = 5, so the time taken = 5 × 3.25 = 16.25 seconds.
हिंदी में प्रश्न
एक संग्रहालय की पुरानी घड़ी 9 बार बजने में 26 सेकंड लेती है, और किन्हीं भी दो लगातार घंटों के बीच बराबर समय लगता है। इसे 6 बार बजने में कितने सेकंड लगेंगे?
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सही उत्तर: (C) 16.25 सेकंड
जब घड़ी N बार बजती है, तो घंटों के बीच अंतराल (gap) की संख्या N नहीं बल्कि (N-1) होती है। यहाँ 9 बार बजने में 26 सेकंड लगते हैं, इसलिए अंतरालों की संख्या (9-1) = 8 है, अतः प्रत्येक अंतराल = 26/8 = 3.25 सेकंड। 6 बार बजने के लिए अंतरालों की संख्या (6-1) = 5 होगी, इसलिए लगने वाला समय = 5 × 3.25 = 16.25 सेकंड।
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