Quantitative (गणित) – Quantitative Ability MCQ
Quantitative (गणित) – व्यवस्थापन प्रवेश
Quantitative Ability · Management Entrance – English, Quant, Logical Reasoning & GK · १,३१७ प्रश्न
१,३१७ प्रश्न उपलब्ध। मोड छान्नुहोस्:
Quantitative (गणित): प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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What is the HCF of 36 and 84?
सही उत्तर: ग) 12
36 = 2² × 3² and 84 = 2² × 3 × 7, so HCF = 2² × 3 = 12. 6 is a common factor but not the highest one.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A vessel contains 40 litres of milk. 4 litres are taken out and replaced with water, and this is done once more. How much milk is now in the vessel?
सही उत्तर: ग) 32.4 litres
Milk left = 40 × (1 − 4/40)² = 40 × 0.81 = 32.4 L. 32 L wrongly assumes that pure milk is removed both times.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In what ratio must rice at Rs. 60 per kg be mixed with rice at Rs. 75 per kg so that the mixture is worth Rs. 65 per kg?
सही उत्तर: घ) 2 : 1
By alligation: (75 − 65) : (65 − 60) = 10 : 5 = 2 : 1 (cheaper : dearer). The mean price is closer to Rs. 60, so more of the cheaper rice is needed.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 60-litre mixture contains milk and water in the ratio 2 : 1. How much water must be added to make the ratio 1 : 1?
सही उत्तर: ग) 20 litres
The mixture has 40 L milk and 20 L water. For a 1 : 1 ratio, water must equal 40 L, so 20 L must be added.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A person travels equal distances at 10 km/h, 20 km/h and 60 km/h. What is his average speed for the whole journey?
सही उत्तर: ख) 18 km/h
Average speed = 3/(1/10 + 1/20 + 1/60) = 3/(10/60) = 18 km/h. 30 km/h is the simple average of the speeds, which does not apply to equal distances.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Two cyclists start at the same time from places 60 km apart and ride towards each other at 12 km/h and 18 km/h. After how long will they meet?
सही उत्तर: क) 2 hours
Moving towards each other, their relative speed = 12 + 18 = 30 km/h. Time = 60/30 = 2 hours.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Walking at 4/5 of his usual speed, a man reaches his office 10 minutes late. What is his usual time to reach the office?
सही उत्तर: क) 40 minutes
At 4/5 of the speed, the time becomes 5/4 of the usual time T. The extra time is T/4 = 10, so T = 40 minutes (50 minutes is the time taken at the slower speed).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A boat's speed in still water is 10 km/h and the stream flows at 2 km/h. How long will it take to go 24 km downstream and come back?
सही उत्तर: घ) 5 hours
Downstream speed is 12 km/h (2 h) and upstream speed is 8 km/h (3 h), so the total is 5 hours. 4.8 h wrongly uses 10 km/h both ways.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A boat goes downstream at 18 km/h and upstream at 12 km/h. What is the speed of the stream?
सही उत्तर: क) 3 km/h
Stream speed = (downstream − upstream)/2 = (18 − 12)/2 = 3 km/h. 15 km/h is the boat's speed in still water.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Two trains 120 m and 180 m long run in opposite directions at 40 km/h and 50 km/h. In how much time will they cross each other completely?
सही उत्तर: घ) 12 seconds
Relative speed (opposite directions) = 90 km/h = 25 m/s. Distance = 120 + 180 = 300 m, so time = 12 s. 108 s would apply if they ran in the same direction (relative speed 10 km/h).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
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