SSC CGL 2018 Practice Test Papers | Quantitative Aptitude (Day-10)

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SSC CGL 2018 | Quantitative Aptitude (Day-10)

maximum of 10 points
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1). The value of (16)2x (28)2/ (64)2 is

  1. 59
  2. 56
  3. 78
  4. 49

2). In SI, a sum of money becomes 5 times the principal amount in 16 years. What is the rate of interest?

  1. 25%
  2. 18%
  3. 16%
  4. 17%

3). The sum of three numbers is 168. The ratio of second and the third number is 7: 9 and the 1st and the third are as 8: 27, what is second number?

  1. 65
  2. 45
  3. 63
  4. 72

4). A can complete a work in 40 days while B can do it in 25 days. A started the work and after 8 days A left the job. After how many days B will complete the remaining work?

  1. 160/13
  2. 28
  3. 20
  4. 200/13

5). Harshitha and Harija can do a piece of work in 20 days. Harini who is twice effient of harshini can do a piece of work in 5 days. Find the time taken by Harshitha to do the work?

  1. 10
  2. 20
  3. 28
  4. cannot be determined

6). 50 workers can complete a job in 6 days working 8 hours a day. If 40 workers are employed to complete the job in 20 days, and then find the number of hours they work per day to complete the job?

  1. 4 hours
  2. 6 hours
  3. 9 hours
  4. 3 hours

7). The number of straight lines that can be drawn in a plane with 21 given points, assuming that no three of them are collinear is—

  1. 210
  2. 46
  3. 2·23!
  4. 21!

8). Area of the largest triangle drawn in a semicircle of radius r will be—

  1. r2
  2. r3
  3. 2r2
  4. 2r3

9). If 25% of 3/ 4 of 4 /5 of a number is 66, what would be the value of 25 percent of that number?

  1. 1
  2. 110
  3. 10
  4. 20

10). A sum of money was distributed among 400 men and some ladies in the ratio of 10: 9. If each man got Rs. 5 and a lady Rs. 4. What is the total number of ladies?

  1. 220
  2. 200
  3. 190
  4. 210

Answers:

1). Answer: d.

(16)2x (28)2/ (64)2 = 49

2). Answer: A

Let principal = Rs. x

∴ Amount a. = 5x

S.I. = A – P

S.I. = 5x – x = Rs.4x

4x =x*16*r/100

Rate% = 25%

3). Answer: c

Ratio of second number: third number= 7:9=21:27

Ratio of first number: third number    = 8:27

Ratio of three numbers= 8:21:27

8x+21x+27x=168

X=3

Second number=21×3=63

4). Answer: c

One day work of A=1/40

One day work of B=1/25

In 8 days A completed 8*1/40= 1/5 work

Remaining 4/5 of the work was completed b y B

4/5*25=20 days

5). Answer: d

6). Answer: d.

x = 50 × 6 × 8 /40 × 20 = 3 hours

7). Answer: a.

21C2=21×20/2=210

8). Answer: a.

Perpendicular height of the largest triangle drawn in a semi-circle of radius r = r

∴ Area of the largest possible triangle = 1/ 2 (base × height) = 1/ 2 (2r) × (r) = r2

9). Answer: b.

Let the number be x

Then, x × 4/ 5 × 3/ 4 × 25 /100 = 66

⇒ x = 66 × 20 /3 = 440

∴ 25 per cent of the number = 440 × 25/ 100 =110

10). Answer: d.

Let the number of women be x

400 × 5 /(x × 4) = 10 /9

400 × 5 × 9 = 10 × x × 4

∴ x = 400 × 5 × 9/ (10× 4 )= 450

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