Question Library
Browse our collection of questions across various subjects
Mathematics
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If the mean of a frequency distribution is 100 and the coefficient of variation is 45%, then what is the…
NDA Mathematics 2021
NDA 2021
Mathematics
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Let x be the HM and y be the GM of two positive numbers m and n. If 5x =…
NDA Mathematics 2021
NDA 2021
Mathematics
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What is the sum of deviations of the variate values 73, 85, 92, 105, 120 from their mean?
NDA Mathematics 2021
NDA 2021
Mathematics
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If M is the mean of n observations x₁ – k, x₂ – k, …, xₙ – k, where k…
NDA Mathematics 2021
NDA 2021
Mathematics
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The following table gives the frequency distribution of number of peas per pea pod of 198 pods : Number of…
NDA Mathematics 2021
NDA 2021
Mathematics
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The coefficient of correlation is independent of
NDA Mathematics 2021
NDA 2021
Mathematics
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For a histogram based on a frequency distribution with unequal class intervals, the frequency of a class should be proportional…
NDA Mathematics 2021
NDA 2021
Mathematics
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The numbers of Science, Arts and Commerce graduates working in a company are 30, 70 and 50 respectively. If these…
NDA Mathematics 2021
NDA 2021
Mathematics
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Consider the following measures of central tendency for a set of N numbers: 1. Arithmetic mean 2. Geometric meanWhich of…
NDA Mathematics 2021
NDA 2021
Mathematics
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What is the solution of the following differential equation? ln(dy/dx) + y = x
NDA Mathematics 2021
NDA 2021
Mathematics
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Which one of the following differential equations has the general solution y = ae^x + be^(–x)?
NDA Mathematics 2021
NDA 2021
Mathematics
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What is the degree of the following differential equation?x = √(1 + (d²y/dx²))
NDA Mathematics 2021
NDA 2021
Mathematics
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If the general solution of a differential equation is y² + 2cy – cx + c² = 0, where c…
NDA Mathematics 2021
NDA 2021
Mathematics
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Consider the following statements in respect of the function f(x) = sin x : 1. f(x) increases in the interval…
NDA Mathematics 2021
NDA 2021
Mathematics
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If the functionf(x) = a + bx, x < 1 5, x = 1 b – ax, x > 1is continuous, then…
NDA Mathematics 2021
NDA 2021
Mathematics
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If a differentiable function f(x) satisfieslim (x→1) [f(x) + 1] / [x² – 1] = 3/2then what is lim (x→1)…
NDA Mathematics 2021
NDA 2021
Mathematics
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What is the derivative of e^(x²) with respect to x²?
NDA Mathematics 2021
NDA 2021
General Ability
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In a typical flower, germinating pollen grains pass through several parts of the gynoecium before they reach the ovule. A…
NDA General Ability 2021
NDA 2021