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UPSC 2001 › CSAT › Quantitative Aptitude

10 questions · 2001 · answers as per the UPSC key

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All years of Quantitative Aptitude · Full UPSC 2001 paper
UPSC 2001 · Q139 · CSAT › Quantitative Aptitude · Save

Solve the given equations: x² + y² = 34 x⁴ − y⁴ = 544 The values of x and y are

(a) ±4, ±3
(b) ±5, ±3
(c) ±3, ±5
(d) ±3, ±4
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Answer: (b) ±5, ±3
UPSC 2001 · Q140 · CSAT › Quantitative Aptitude · Save

A worker reaches his factory 3 minutes late if his speed from his house to the factory is 5 km/hr. If he walks at a speed of 6 km/hr, then he reaches the factory 7 minutes early. The distance of the factory from his house is

(a) 4 km
(b) 5 km
(c) 6 km
(d) 7 km
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Answer: (b) 5 km
UPSC 2001 · Q141 · CSAT › Quantitative Aptitude · Save

A conveyer belt delivers baggage at the rate of 3 tons in 5 minutes, and a second conveyer belt delivers baggage at the rate of 1 ton in 2 minutes. How much time will it take to get 33 tons of baggage delivered using both the conveyer belts?

(a) 25 minutes and 30 seconds
(b) 30 minutes
(c) 35 minutes
(d) 40 minutes and 45 seconds
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Answer: (b) 30 minutes
UPSC 2001 · Q142 · CSAT › Quantitative Aptitude · Save

Water is filled in a container in such a manner that its volume doubles after every five minutes. If it takes 30 minutes for the container to be full, in how much time will it be one-fourth full?

(a) 7 minutes and 30 seconds
(b) 10 minutes
(c) 20 minutes
(d) 25 minutes
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Answer: (c) 20 minutes
UPSC 2001 · Q143 · CSAT › Quantitative Aptitude · Save

A city has a population of 3,00,000 out of which 1,80,000 are males. 50% of the population is literate. If 70% of the males are literate, the number of literate females is

(a) 24,000
(b) 30,000
(c) 54,000
(d) 60,000
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Answer: (a) 24,000
UPSC 2001 · Q144 · CSAT › Quantitative Aptitude · Save

In a survey, it was found that 80% of those surveyed owned a car while 60% of those surveyed owned a mobile phone. If 55% owned both a car and a mobile phone, what per cent of those surveyed owned a car or a mobile phone or both?

(a) 65%
(b) 80%
(c) 85%
(d) 97.5%
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Answer: (c) 85%
UPSC 2001 · Q145 · CSAT › Quantitative Aptitude · Save

In 1930, a person’s age was 8 times that of his son. In 1938, the father’s age became ten times that of his son’s age in 1930. The ages of the son and father in 1940 were, respectively.

(a) 16 years, 58 years
(b) 15 years, 50 years
(c) 14 years, 42 years
(d) 13 years, 34 years
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Answer: (c) 14 years, 42 years
UPSC 2001 · Q146 · CSAT › Quantitative Aptitude · Save

A circle of 1 m radius is drawn inside a square as shown in the figure given above. What is the area of the shaded portion in m²?

(a) (4 - π)
(b) 1 + (π/2)
(c) (1/4) - (π/4)
(d) 1 - (π/4)
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Answer: (d) 1 - (π/4)
This question uses a table or figure from the original paper that is not reproduced here.
UPSC 2001 · Q148 · CSAT › Quantitative Aptitude · Save

In the above figure, ABCD is a cyclic quadrilateral, AB = BC and angle BAC = 70°, then angle ADC is

(a) 40°
(b) 80°
(c) 110°
(d) 140°
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Answer: (d) 140°
This question uses a table or figure from the original paper that is not reproduced here.
UPSC 2001 · Q150 · CSAT › Quantitative Aptitude · Save

A person travels from X to Y at a speed of 40 kmph and returns by increasing his speed by 50%. What is his average speed for both the trips?

(a) 36 kmph
(b) 45 kmph
(c) 48 kmph
(d) 50 kmph
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Answer: (c) 48 kmph