391. A school has two rectangular playgrounds, which are similar in shape. If the length and the breadth of the first playground are given as 224 m and 160 m, respectively, then which of the following options CANNOT be the dimensions of the second playground?

  • (A) Length = 273 m; Breadth = 195 m
  • (B) Length = 168 m; Breadth = 120 m
  • (C) Length = 210 m; Breadth = 150 m
  • (D) Length = 343 m; Breadth = 255 m

392. Determine the value of the product (4a + 3b) (16a2 − 12ab + 9b2) for a = 2 and b = 3.

  • (A) 1131
  • (B) 1141
  • (C) 1231
  • (D) 1241

393. Simplify the given expression.

  • (A) 2
  • (B) 12
  • (C) 20
  • (D) 4

394. Amita can build a room in the same amount of time that Bina and Sita working together can build. If Amita and Bina together could do it in 25 days and Sita alone in 35 days, then how many days are required for Bina alone to do the same work?

  • (A) 152 Days
  • (B) 175 Days
  • (C) 165 Days
  • (D) 180 Days

395. A boat can travel 16.9 km downstream in 52 min. If the speed of the current is 3 km/h, then how much time (in hours) will the boat take to travel 84 km upstream?

  • (A) 6
  • (B) 13.5
  • (C) 6.22
  • (D) 7.5

396. If one angle of triangle PQR is greater than the sum of the other two, the triangle PQR will be:

  • (A) obtuse angle
  • (B) equilateral
  • (C) right angle
  • (D) acute angle

397. The following table shows the marks of a student in 5 tests in the subjects Maths, Physics, and Chemistry (out of 100 for each subject). Study the table and answer the question that follows. The ratio of the average marks obtained by the student in test 2 to the average marks he got in Maths in all tests, is:

  • (A) 21∶25
  • (B) 4∶7
  • (C) 43∶45
  • (D) 4∶3

398. Two trains, 140 m and 120 m in length, are running in the same direction at the speed of 60 km/h and 78 km/h, respectively. In how much time will they completely cross each other?

  • (A) 52 seconds
  • (B) 58 seconds
  • (C) 48 seconds
  • (D) 65 seconds

399. Simplify the following. 72 ÷ 8 × 4 +40 - 35 ÷ 5 + 15

  • (A) 24
  • (B) 84
  • (C) 48
  • (D) 9

400. A shopkeeper wanted to sell ₹2,000 worth of products. But he had two options, giving three successive discounts of 10% each or giving a single discount of 28%. What was the difference between the two options of discounts (in rupees)?

  • (A) 28
  • (B) 18
  • (C) 16
  • (D) 22

Total Quizz:- 10040

UPSC

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