Question Library
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Mathematics
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Consider the following statements: 1. If p is relatively prime to each of q and r, then p is relatively…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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If the sum of a real number and its reciprocal is 2·5, then how many such numbers are possible?
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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Six cubes, each with 12 cm edge are joined end to end. What is the surface area of resulting cuboid?
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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A right circular cone has height 8 cm. If the radius of its base is 6 cm, then what is…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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A bucket is in the form of a truncated cone. The diameters of the base and top of the bucket…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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The volume of a hemisphere is 155232 cm³. What is the radius of the hemisphere?
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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Three copper spheres of radii 3 cm, 4 cm and 5 cm are melted to form a large sphere. What…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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Consider a trapezium ABCD, in which AB is parallel to CD and AD is perpendicular to AB. If the trapezium…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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A thin rod of length 24 feet is cut into rods of equal size and joined so as to form…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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If one side of a right-angled triangle (with all sides integers) is 15 cm, then what is the maximum perimeter…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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A solid metallic cylinder of height 10 cm and radius 6 cm is melted to make two cones in the…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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A hollow sphere of external and internal diameters 6 cm and 4 cm respectively is melted into a cone of…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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Let XYZ be an equilateral triangle in which XY = 7 cm. If A denotes the area of the triangle,…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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What is (x – a)(x – b)(x – c) equal to?
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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If log₁₀ 1995 = 3·3000, then what is the value of (0·001995)² ?
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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The sides of a triangle are 30 cm, 28 cm and 16 cm respectively. In order to determine its area,…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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The quotient when x⁴ – x² + 7x + 5 is divided by (x + 2) is ax³ + bx²…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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The data shows that Indian roads are turning deadlier over the years. What is the average number of cyclists killed…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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The data shows that Indian roads are turning deadlier over the years. What is the average number of bikers killed…
CDS Elementary Mathematics 2019
CDS 2019
Mathematics
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The data shows that Indian roads are turning deadlier over the years. What is the approximate percentage change in the…
CDS Elementary Mathematics 2019
CDS 2019