Question Library
Browse our collection of questions across various subjects
Mathematics
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Consider the following statements: 1. (sec²θ – 1)(1 – cosec²θ) = 1 2. sin θ(1 + cos θ)² + (1…
CDS Elementary Mathematics 2018
CDS 2018
Mathematics
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What angle does the hour hand of a clock describe in 10 minutes of time?
CDS Elementary Mathematics 2018
CDS 2018
Mathematics
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What is cot 1° cot 23° cot 45° cot 67° cot 89° equal to?
CDS Elementary Mathematics 2018
CDS 2018
Mathematics
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What is sin⁴θ – cos⁴θ equal to for any real number θ?
CDS Elementary Mathematics 2018
CDS 2018
Mathematics
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The arithmetic mean of 11 observations is 11. The arithmetic mean of the first 6 observations is 10·5 and the…
CDS Elementary Mathematics 2018
CDS 2018
Mathematics
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The arithmetic mean of two numbers is 10 and their geometric mean is 8. What are the two numbers?
CDS Elementary Mathematics 2018
CDS 2018
Mathematics
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A Pie Chart is drawn for the following data: Sector Percentage Agriculture and Rural Development 12·9 Irrigation 12·5 Energy 27·2…
CDS Elementary Mathematics 2018
CDS 2018
Mathematics
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A, B, C, D and E start a partnership firm. Capital contributed by A is three times that contributed by…
CDS Elementary Mathematics 2018
CDS 2018
Mathematics
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An article is sold at a profit of 32%. If the cost price is increased by 20% and the sale…
CDS Elementary Mathematics 2018
CDS 2018
Mathematics
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A car has an average speed of 60 km per hour while going from Delhi to Agra and has an…
CDS Elementary Mathematics 2018
CDS 2018
Mathematics
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A water tank has been fitted with two taps P and Q and a drain pipe R. Taps P and…
CDS Elementary Mathematics 2018
CDS 2018
Mathematics
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A man can row at a speed of x km/hr in still water. If in a stream which is flowing…
CDS Elementary Mathematics 2018
CDS 2018
Mathematics
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The average of the ages of 15 students in a class is 19 years. When 5 new students are admitted…
CDS Elementary Mathematics 2018
CDS 2018
General Knowledge
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Growth in production (in percent) of which one of the following core industries in India during the period 2015–2016 was…
CDS General Knowledge 2018
CDS 2018
Mathematics
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If the average of 9 consecutive positive integers is 55, then what is the largest integer?
CDS Elementary Mathematics 2018
CDS 2018
General Knowledge
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Consider the following statements about National Wildlife Action Plan (NWAP) of India for 2017–2031: 1. This is the Third National…
CDS General Knowledge 2018
CDS 2018
Mathematics
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A quadratic polynomial ax² + bx + c is such that when it is divided by x, (x – 1)…
CDS Elementary Mathematics 2018
CDS 2018
General Knowledge
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Which one of the following statements in respect of the States of India is not correct?
CDS General Knowledge 2018
CDS 2018
Mathematics
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An alloy A contains two elements, copper and tin in the ratio of 2 : 3, whereas an alloy B…
CDS Elementary Mathematics 2018
CDS 2018
General Knowledge
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Which one of the following became a part of China in 1997 following the principle of ‘one country, two systems’?
CDS General Knowledge 2018
CDS 2018