Question Library
Browse our collection of questions across various subjects
Mathematics
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The center of the circle(x − 2a)(x − 2b) + (y − 2c)(y − 2d) = 0 is
NDA Mathematics 2020
NDA 2020
Mathematics
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Consider the following in respect of a non-singular matrix of order 3: 1. A (adj A) = (adj A) A…
NDA Mathematics 2020
NDA 2020
Mathematics
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What is the sum of the last five coefficients in the expansion of (1 + x)^9 when it is expanded…
NDA Mathematics 2020
NDA 2020
Mathematics
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Let p, q and r be three distinct positive real numbers. If D = (q/p) + (r/q) – (p/r), then…
NDA Mathematics 2020
NDA 2020
Mathematics
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Consider the proper subsets of {1, 2, 3, 4}. How many of these proper subsets are superset of the set…
NDA Mathematics 2020
NDA 2020
Mathematics
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What is the modulus of the complex number(cos θ + i sin θ)/(cos θ − i sin θ), where i…
NDA Mathematics 2020
NDA 2020
Mathematics
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What is the argument of the complex number(1 − i√3)/(1 + i√3), where i = √−1?
NDA Mathematics 2020
NDA 2020
Mathematics
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The roots α and β of a quadratic equation, satisfy the relations α + β = α² + β² and…
NDA Mathematics 2020
NDA 2020
Mathematics
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If cot α and cot β are the roots of the equation x² − 3x + 2 = 0, then…
NDA Mathematics 2020
NDA 2020
Mathematics
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If p², q² and r² (where p, q, r > 0) are in GP, then which of the following is/are…
NDA Mathematics 2020
NDA 2020
Mathematics
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If A is a matrix of order 3 × 5 and B is a matrix of order 5 × 3,…
NDA Mathematics 2020
NDA 2020
Mathematics
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If sin x + sin y = cos y − cos x, where0 < y < x < π/2, then…
NDA Mathematics 2020
NDA 2020
General Ability
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Which of the following statements is NOT correct regarding the travel of sound waves?
NDA General Ability 2020
NDA 2020
General Ability
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A liquid is kept in a glass beaker. Which one of the following statements is correct regarding the pressure exerted…
NDA General Ability 2020
NDA 2020
General Ability
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The number of maximum electrons in N Shell is
NDA General Ability 2020
NDA 2020
General Ability
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MILAN, a multilateral naval exercise, 2020 was hosted by which one of the following cities?
NDA General Ability 2020
NDA 2020
General Ability
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In January 2020, a passenger aircraft crashed in Iran soon after taking off from Tehran’s Imam Khomeini airport killing about…
NDA General Ability 2020
NDA 2020
General Ability
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Which one of the following was the official mascot of Khelo India Youth Games, 2020?
NDA General Ability 2020
NDA 2020