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If H is the harmonic mean of numbers 1, 2, 2², 2³, …, 2^(n-1), then what is n/H equal to?
NDA Mathematics 2023
NDA 2023
Mathematics
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If G is the geometric mean of numbers 1, 2, 2^2, 2^3, …, 2^(n-1), then what is the value of…
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Mathematics
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Let P, Q, R represent mean, median and mode for some distribution and mode M for some distribution SP =…
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Mathematics
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For data -1, 1, 4, 3, 8, 12, 17, 19, 9, 11, if M is the median of first 5…
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NDA 2023
Mathematics
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Consider the following frequency distribution: What is the value of median of the distribution?
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NDA 2023
Mathematics
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A die is thrown 10 times and obtained the following outputs: 1, 2, 1, 1, 2, 1, 4, 6, 5,…
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NDA 2023
Mathematics
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A bivariate data set contains only two points (-1, 1) and (3, 2). What will be the line of regression…
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NDA 2023
Mathematics
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From observations 4, 1, 4, 3, 6, 2, 1, 3, 4, 5, 1, 6 (dice rolls): If m = mean…
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NDA 2023
Mathematics
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Central angles p, q, r, s satisfy 9p = 3q = 2r = 6s. What is 4p – q?
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NDA 2023
Mathematics
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If regression lines are x + 4y + 1 = 0 and 4x + 9y + 7 = 0, find…
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NDA 2023
Mathematics
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Let X + Y = 100, and X ~ B(100, 4/5). What is the variance of Y?
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NDA 2023
Mathematics
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A coin is biased such that heads is three times as likely as tails. In four tosses, what is the…
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NDA 2023
Mathematics
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A biased coin has P(H) = 1/4. If tossed five times, what is the probability of getting tails in first…
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NDA 2023
Mathematics
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Let A and B be independent events with P(A) = 0.7, P(B’) = k, P(A U B) = 0.8. What…
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NDA 2023
Mathematics
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The mean and variance of five observations are 14 and 13.2 respectively. Three of them are 11, 16 and 20.…
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Mathematics
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What is the range of the function f(x) = x + |x| for all real x?
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NDA 2023
Mathematics
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If f(x) = x² + 2 and g(x) = 2x – 3, what is (f o g)(1)?
NDA Mathematics 2023
NDA 2023