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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In how many ways can 4 different balls be placed in 2 different boxes so that neither box is empty?
सही उत्तर: क) 14
Each ball has 2 choices (2⁴ = 16) minus the 2 cases with all balls in one box: 14.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A bag has 3 red and 2 blue balls. A ball is drawn, its colour noted, and it is put back; then a second ball is drawn. What is the probability that both balls have the same colour?
सही उत्तर: ग) 13/25
(3/5)² + (2/5)² = 9/25 + 4/25 = 13/25.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 3-digit PIN is formed with digits 0–9, repetition allowed, all PINs equally likely. What is the probability that all three digits are different?
सही उत्तर: क) 0.72
(10 × 9 × 8) ÷ 10³ = 720/1000 = 0.72.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Two fair dice are thrown. What is the probability that the product of the two numbers is a perfect square?
सही उत्तर: क) 2/9
Favourable: the six doublets plus (1, 4) and (4, 1) = 8 outcomes; 8/36 = 2/9.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A test has mean 60 and standard deviation 8. What is the z-score of a student who scored 76?
सही उत्तर: क) 2
z = (76 − 60) ÷ 8 = 2.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Exam scores are approximately normally distributed with mean 50 and standard deviation 5. Roughly what percentage of students score between 45 and 55?
सही उत्तर: ग) 68%
45–55 is within one standard deviation of the mean, which covers about 68% of a normal distribution.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The probability that it will rain tomorrow is 0.3. What are the odds against rain?
सही उत्तर: ग) 7 : 3
Odds against = P(no rain) : P(rain) = 0.7 : 0.3 = 7 : 3.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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For two variables, x̄ = 10, ȳ = 20 and the regression coefficient of y on x is 1.5. Using the regression line of y on x, what is the estimated value of y when x = 14?
सही उत्तर: घ) 26
y − 20 = 1.5(x − 10) ⇒ y = 20 + 1.5 × 4 = 26.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Two fair dice are thrown. What is the expected value of the sum of the numbers shown?
सही उत्तर: क) 7
Each die has expectation 3.5, so the sum has 3.5 + 3.5 = 7.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In how many ways can 3 people be seated on 5 chairs placed in a row (one person per chair)?
सही उत्तर: ख) 60
⁵P₃ = 5 × 4 × 3 = 60.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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