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13 questions · 2000 · answers as per the UPSC key

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UPSC 2000 · Q129 · CSAT › Quantitative Aptitude · Save

A rectangular water tank measures 15 m × 6 m at top and is 10 m deep. It is full of water. If water is drawn out lowering the level by 1 metre, how much of water has been drawn out?

(a) 45,000 litres
(b) 90,000 litres
(c) 4,500 litres
(d) 900 litres
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Answer: (b) 90,000 litres
UPSC 2000 · Q130 · CSAT › Quantitative Aptitude · Save

An accurate clock shows 8 o’clock in the morning. Through how many degrees will the hour hand rotate when the clock shows 2 o’clock in the afternoon?

(a) 150°
(b) 144°
(c) 168°
(d) 180°
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Answer: (d) 180°
UPSC 2000 · Q131 · CSAT › Quantitative Aptitude · Save

The monthly income of Komal and Asha are in the ratio of 4 : 3. Their monthly expenses are in the ratio of 3 : 2. However, both save Rs. 600 per month. What is their total monthly income?

(a) Rs. 8,400
(b) Rs. 5,600
(c) Rs. 4,200
(d) Rs. 2,800
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Answer: (c) Rs. 4,200
UPSC 2000 · Q132 · CSAT › Quantitative Aptitude · Save

If X = –2, then X³ – X² – X – 1 is equal to

(a) 1
(b) –3
(c) –11
(d) –15
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Answer: (c) –11
UPSC 2000 · Q133 · CSAT › Quantitative Aptitude · Save

In the given figure, all line segments of the shaded portion are of the same length and at right angles to each other. The same can be cut out of a board of side 10 cm. What is the area of the shaded portion?

(a) 36 cm²
(b) 48 cm²
(c) 52 cm²
(d) 64 cm²
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Answer: (c) 52 cm²
This question uses a table or figure from the original paper that is not reproduced here.
UPSC 2000 · Q139 · CSAT › Quantitative Aptitude · Save

In a class there are 18 boys who are over 160 cm tall. If these boys constitute three fourths of the boys and the total number of boys is two third of the number of students in the class, then what is the number of girls in the class?

(a) 6
(b) 12
(c) 18
(d) 24
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Answer: (b) 12
UPSC 2000 · Q140 · CSAT › Quantitative Aptitude · Save

A rectangular piece of iron sheet measuring 50 cm by 100 cm is rolled into a cylinder of height 50 cm. If the cost of painting the cylinder is Rs. 50 per square metre, then what will be the cost of painting the outer surface of the cylinder?

(a) Rs. 25.00
(b) Rs. 37.50
(c) Rs. 75.00
(d) Rs. 87.50
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Answer: (a) Rs. 25.00
UPSC 2000 · Q141 · CSAT › Quantitative Aptitude · Save

In an examination, every candidate took Physics or Mathematics or both. 65.8% took Physics and 59.2% took Mathematics. The total number of candidates was 2000. How many candidates took both Physics and Mathematics?

(a) 750
(b) 500
(c) 250
(d) 125
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Answer: (b) 500
UPSC 2000 · Q142 · CSAT › Quantitative Aptitude · Save

A bag contains 20 balls. 8 balls are green, 7 are white and 5 are red. What is the minimum number of balls that must be picked up from the bag blind-folded (without replacing any of it) to be assured of picking at least one ball of each colour?

(a) 4
(b) 7
(c) 11
(d) 16
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Answer: (d) 16
UPSC 2000 · Q143 · CSAT › Quantitative Aptitude · Save

Which one of the following has a greater perimeter than the rest?

(a) A square with an area of 36 sq. cm
(b) An equilateral triangle with a side of 9 cm
(c) A rectangle with 10 cm as length and 40 sq. cm as area
(d) A circle with a radius of 4 cm
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Answer: (c) A rectangle with 10 cm as length and 40 sq. cm as area
UPSC 2000 · Q144 · CSAT › Quantitative Aptitude · Save

In the given figure, angle QOP = 30° and angle ORP = 20°, angle QOR is equal to

(a) 100°
(b) 120°
(c) 130°
(d) 140°
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Answer: (c) 130°
This question uses a table or figure from the original paper that is not reproduced here.
UPSC 2000 · Q145 · CSAT › Quantitative Aptitude · Save

A club has 108 members. Two-thirds of them are men and the rest are women. All members are married except for 9 women members. How many married women are there in the club?

(a) 20
(b) 24
(c) 27
(d) 30
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Answer: (c) 27
UPSC 2000 · Q150 · CSAT › Quantitative Aptitude · Save

What is the maximum number of pieces of 5 cm × 5 cm × 10 cm cake that can be cut from a big cake of 5 cm × 30 cm × 30 cm size?

(a) 10
(b) 15
(c) 18
(d) 30
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Answer: (c) 18