Question Library
Browse our collection of questions across various subjects
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The monthly incomes of A and B are in the ratio 4:3. Each saves ₹600. If their expenditures are in…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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A trader sells two computers at the same price, making a profit of 30% on one and a loss of…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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A lent ₹25000 to B and at the same time lent some amount to C at same 7% simple interest.…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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If the equations x² + 5x + 6 = 0 and x² + kx + 1 = 0 have a…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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What is the LCM of 1/3, 5/6, 2/9, 4/27?
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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X, Y and Z start at same point and same time in the same direction to run around a circular…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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For what value of k can the expression x³ + kx² – 7x + 6 be resolved into three linear…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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The rate of interest on two different schemes is the same and it is 20%. But in one of the…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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Consider the following statements : 1. Unit digit in 17¹⁷⁴ is 7. 2. Difference of the squares of any two…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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HCF of two numbers is 12. Which one of the following can never be their LCM?
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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If x = (1 + √3)/2 and y = x³, then y satisfies which one of the following equations?
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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Let a and b be two positive real numbers such that a√a + b√b = 32 and a√b + b√a…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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Two numbers p and q are such that the quadratic equation px² + 3x + 2q = 0 has –6…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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If X = {a, {b}, c}, Y = {{a}, b, c} and Z = {a, b, c}, then (X ∩…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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What is the value of (x – y)³ + (y – z)³ + (z – x)³ / 9(x – y)(y…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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What is the LCM of the polynomials x³ + 3x² + 3x + 1, x³ + 5x² + 5x +…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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What is the sum of all integer values of n for which n² + 19n + 92 is a perfect…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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Which one of the following is not correct ?
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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If the ratio of the work done by (x + 2) workers in (x – 3) days to the work…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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What is the maximum value of the expression 1/(x² + 5x + 10) ?
CDS Elementary Mathematics 2019
CDS 2019