Question Library
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Mathematics
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Consider the following statements: 1.If non-parallel sides of a trapezium are equal, then it is cyclic. 2.If the chord of…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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At 8:30, the hour hand and the minute hand of a clock form an angle of
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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Let OA, OB, OC and OD are rays in the anticlockwise direction such that ∠AOB = ∠COD = 100°, ∠BOC…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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If the angle between the radii of a circle is 130°, then the angle between the tangents at the ends…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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Three equal circles each of diameter d are drawn on a plane in such a way that each circle touches…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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From a circular piece of cardboard of radius 3 cm, two sectors of 40° each have been cut off. The…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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The diagonals of a trapezium are at right angles, and the slant sides, if produced, form an equilateral triangle with…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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The sides of a triangle are 25 cm, 39 cm and 56 cm. The perpendicular from the opposite vertex on…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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If a − b = 4 and a² + b² = 40, where a and b are positive integers, then…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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A rectangular paper of 44 cm long and 6 cm wide is rolled to form a cylinder of height equal…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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The diagonals of three faces of a cuboid are 13, √281 and 20 linear units. Then the total surface area…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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A rectangular block of wood having dimensions 3 m × 2 m × 1.75 m has to be painted on…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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The last digit in the expansion of 17^256 is
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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The total outer surface area of a right circular cone of height 24 cm with a hemisphere of radius 7…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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Water flows through a cylindrical pipe of internal diameter 7 cm at the rate of 5 m/s. The time, in…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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The radius of a sphere is equal to the radius of the base of a right circular cone, and the…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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A sphere and a cube have same surface area. The ratio of square of their volumes is
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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Two circles, each of radius r, with centres P and Q, are such that each circle passes through the centre…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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The area of a rhombus with side 13 cm and one diagonal 10 cm will be
CDS Elementary Mathematics 2015
CDS 2015