Question Library
Browse our collection of questions across various subjects
Mathematics
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Four years ago, the average age of A and B was 18 years. Now the average age of A, B…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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The average weight of students in a class is 43 kg. Four new students are admitted to the class whose…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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How many right angled triangles can be formed by joining the vertices of a cuboid ?
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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If x = 91/216, then the value of 3 – [1 / (1 – x)^(1/3)] is
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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The value of 32cot²(π/4) – 8sec²(π/3) + 8cos³(π/6) is equal to
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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The minimum value of cos²x + cos²y – cos²z is
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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A clock is started at noon. By 10 minutes past 5, through what angle, the hour hand moves ?
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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The difference of maximum values of the expressions (6 + 5x – x²) and (y – 6 – y²) for…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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In a mixture of milk and water of volume 30 litre, the ratio of milk and water is 7 :…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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A sum of Rs. 10,000 is deposited for 1 year at the rate of interest 10% compounded half yearly. What…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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The LCM of two numbers is 12 times their HCF. The sum of HCF and LCM is 403. If one…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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A circle of radius r is inscribed in a regular polygon with n sides (the circle touches all sides of…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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Chord CD intersects the diameter AB of a circle at right angle at a point P in the ratio 1…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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In the above figure, ABCD is a parallelogram. P is a point on BC such that PB : PC =…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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From an external point P tangents PA and PB are drawn to the circle as shown in the above figure.…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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AB is a line segment of length 2a, with M as mid-point. Semicircles are drawn on one side with AM,…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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A river 2·5 m deep and 45 m wide is flowing at the speed of 3·6 km/hour. The amount of…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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How many spherical bullets each of 4 cm in diameter can be made out of a cube of lead whose…
CDS Elementary Mathematics 2015
CDS 2015
Mathematics
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The area of a trapezium is 336 cm². If its parallel sides are in the ratio 5 : 7 and…
CDS Elementary Mathematics 2015
CDS 2015