Question Library
Browse our collection of questions across various subjects
Mathematics
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Let X and Y be two related variables. The two regression lines are given by x – y + 1…
NDA Mathematics 2012
NDA 2012
Mathematics
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Which one of the following is a measure of dispersion ?
NDA Mathematics 2012
NDA 2012
Mathematics
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What is the standard deviation of 7, 9, 11, 13, 15 ?
NDA Mathematics 2012
NDA 2012
Mathematics
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If the mean of few observations is 40 and standard deviation is 8, then what is the coefficient of variation…
NDA Mathematics 2012
NDA 2012
Mathematics
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The monthly family expenditure (in percentage) on different items are as follows : Food 38 | Rent 19 | Cloth…
NDA Mathematics 2012
NDA 2012
Mathematics
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The median of 27 observations of a variable is 18. Three more observations are made and the values of these…
NDA Mathematics 2012
NDA 2012
Mathematics
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The algebraic sum of the deviations of 20 observations measured from 30 is 2. What would be the mean of…
NDA Mathematics 2012
NDA 2012
Mathematics
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The arithmetic mean of numbers a, b, c, d, e is M. What is the value of (a – M)…
NDA Mathematics 2012
NDA 2012
Mathematics
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What is the mean of first n odd natural numbers ?
NDA Mathematics 2012
NDA 2012
Mathematics
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The mean of 10 observations is 5. If 2 is added to each observation and then multiplied by 3, then…
NDA Mathematics 2012
NDA 2012
Mathematics
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What is the geometric mean of the sequence 1, 2, 4, 8, …., 2^n ?
NDA Mathematics 2012
NDA 2012
Mathematics
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ABCD is a parallelogram. If AB = a, BC = b, then what is BD equal to ?
NDA Mathematics 2012
NDA 2012
Mathematics
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The magnitude of the scalar p for which the vector p(-3i – 2j + 13k) is of unit length is…
NDA Mathematics 2012
NDA 2012
Mathematics
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What is the value of λ for which (λi + j – 5k)×(3i – 2j + 4k) = (2i –…
NDA Mathematics 2012
NDA 2012
Mathematics
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Consider the following : 1. 4i×3i = 0 2. (4i/3i) = 4/3Which of the above is/are correct ?
NDA Mathematics 2012
NDA 2012
Mathematics
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If a.b = 0 and a×b = 0 then which one of the following is correct ?
NDA Mathematics 2012
NDA 2012
Mathematics
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EFGH is a rhombus such that the angle EFG is 60°. The magnitude of vectors FH and (m EG) are…
NDA Mathematics 2012
NDA 2012