Question Library
Browse our collection of questions across various subjects
Mathematics
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What is the probability that no two girls sit together?
NDA Mathematics 2023
NDA 2023
Mathematics
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What is the probability that boys and girls sit alternatively?
NDA Mathematics 2023
NDA 2023
Mathematics
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What is the probability that all three boys sit together?
NDA Mathematics 2023
NDA 2023
Mathematics
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In a Binomial distribution B(n, p), n = 6 and 9P(X = 4) = P(X = 2). What is p…
NDA Mathematics 2023
NDA 2023
Mathematics
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In a class, there are n students including the students P and Q. What is the probability that P and…
NDA Mathematics 2023
NDA 2023
Mathematics
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If H is the Harmonic Mean of three numbers ¹⁰C₄, ¹⁰C₅, and ¹⁰C₆, then what is the value of 270/H?
NDA Mathematics 2023
NDA 2023
Mathematics
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A fair coin is tossed 6 times. What is the probability of getting a result in the 6ᵗʰ toss which…
NDA Mathematics 2023
NDA 2023
Mathematics
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If r is the coefficient of correlation between x and y, then what is the correlation coefficient between (3x +…
NDA Mathematics 2023
NDA 2023
Mathematics
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Suppose that there is a chance for a newly constructed building to collapse, whether the design is faulty or not.…
NDA Mathematics 2023
NDA 2023
Mathematics
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The probability that a person recovers from a disease is 0·8. What is the probability that exactly 2 persons out…
NDA Mathematics 2023
NDA 2023
Mathematics
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What is the mean of the numbers 1, 2, 3, …, 10 with frequencies ⁹C₀, ⁹C₁, ⁹C₂, …, ⁹C₉ respectively?
NDA Mathematics 2023
NDA 2023
Mathematics
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Two dice are thrown. What is the probability that difference of numbers on them is 2 or 3?
NDA Mathematics 2023
NDA 2023
Mathematics
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Two distinct natural numbers from 1 to 9 are picked at random. What is the probability that their product has…
NDA Mathematics 2023
NDA 2023
Mathematics
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A, B, C and D are mutually exclusive and exhaustive events.If 2P(A) = 3P(B) = 4P(C) = 5P(D), then what…
NDA Mathematics 2023
NDA 2023
Mathematics
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Three dice are thrown. What is the probability of getting a sum which is a perfect square?
NDA Mathematics 2023
NDA 2023
Mathematics
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If the mean and the sum of squares of 10 observations are 40 and 16160 respectively, then what is the…
NDA Mathematics 2023
NDA 2023
Mathematics
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If X̄ = 20 is the mean of 10 observations x₁, x₂, …, x₁₀; then what is the value of∑…
NDA Mathematics 2023
NDA 2023
Mathematics
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The sum of deviations of n numbers from 10 and 20 are p and q respectively. If (p – q)²…
NDA Mathematics 2023
NDA 2023
General Ability
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Which one of the following statements with respect to Global Positioning System (GPS) is not correct?
NDA General Ability 2022
NDA 2022
General Ability
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While watching news, you hear about a place, of which you had never heard earlier. You want to know more…
NDA General Ability 2022
NDA 2022