इन्जिनियरिङ प्रवेश – Mathematics, Physics, Chemistry, English
इन्जिनियरिङ प्रवेश – Mathematics, Physics, Chemistry, English
Engineering Entrance – Mathematics, Physics, Chemistry & English · ३,८४१ प्रश्न
३,८४१ प्रश्न उपलब्ध। मोड छान्नुहोस्:
इन्जिनियरिङ प्रवेश: 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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The number of ways of distributing 10 identical balls into 4 distinct boxes (boxes may remain empty) is:
सही उत्तर: ख) 286
Non-negative integer solutions of x₁ + x₂ + x₃ + x₄ = 10 number ¹⁰⁺³C₃ = ¹³C₃ = 286.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A and B are independent events with P(A) = 1/2 and P(B) = 1/3. The probability that neither A nor B occurs is:
सही उत्तर: घ) 1/3
P(A′ ∩ B′) = P(A′)P(B′) = (1/2)(2/3) = 1/3.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The probability that a leap year selected at random contains 53 Sundays is:
सही उत्तर: क) 2/7
A leap year has 52 weeks and 2 extra days; 2 of the 7 possible pairs of extra days include a Sunday.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A fair coin is tossed 4 times. The probability of getting exactly 2 heads is:
सही उत्तर: ग) 3/8
⁴C₂/2⁴ = 6/16 = 3/8.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Two cards are drawn without replacement from a well-shuffled pack of 52 cards. The probability that both are aces is:
सही उत्तर: क) 1/221
(4/52) × (3/51) = 12/2652 = 1/221.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If the odds in favour of an event are 3 : 5, the probability of the event is:
सही उत्तर: ग) 3/8
Odds a : b in favour give P = a/(a + b) = 3/8.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Two fair dice are thrown. The probability that both show the same number is:
सही उत्तर: घ) 1/6
There are 6 doublets out of 36 outcomes: 6/36 = 1/6.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If the regression coefficients are b_yx = 0.8 and b_xy = 0.2, the correlation coefficient is:
सही उत्तर: ख) 0.4
r = √(b_yx × b_xy) = √0.16 = 0.4 (positive since both coefficients are positive).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The mean marks of 30 students is 40 and that of another 20 students is 50. The mean marks of all 50 students is:
सही उत्तर: ग) 44
Combined mean = (30 × 40 + 20 × 50)/50 = 2200/50 = 44.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If the mean of a distribution is 50 and its standard deviation is 10, its coefficient of variation is:
सही उत्तर: क) 20%
CV = (σ/mean) × 100 = (10/50) × 100 = 20%.
💬 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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