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Quantitative Aptitude

NUMERICAL ABILITY COMBINED MCQs

Total Questions : 450 | Page 42 of 45 pages
Question 411. 18% of 350 + 12% of 600 = ?
  1.    125
  2.    137
  3.    135
  4.    149
  5.    None of these
 Discuss Question
Answer: Option C. -> 135


? = 180 * 350 / 100  + 12 * 600/ 100

? = 63 + 72 = 135


Question 412. 18 * √1156 ÷ 17 = ?2
  1.    7
  2.    49
  3.    6
  4.    36
  5.    None of these
 Discuss Question
Answer: Option C. -> 6


(?)2 = 18 * 34/34 = 36
=> ?2 =√36  = 6


Question 413. 143.94 + 36.78 - 71.63 = ?
  1.    105.09
  2.    109.89
  3.    111.89
  4.    109.09
  5.    None of these
 Discuss Question
Answer: Option D. -> 109.09


? = 143.94 + 36.78 - 71.63

= 109.09


Question 414. 33/4 ÷ 21/2 * 41/2 + 13/4 = ?
  1.    71/2
  2.    41/4
  3.    33/4
  4.    81/2
  5.    None of these
 Discuss Question
Answer: Option D. -> 81/2


81/2


Question 415. ?% of 432 * 5 = 540
  1.    45
  2.    25
  3.    34
  4.    30
  5.    None of these
 Discuss Question
Answer: Option B. -> 25


? * 432 * 5 / 100  = 540

=>  ? = 540 * 100 / 432 * 5

=> ? = 25



Question 416. What least number should be subtracted from 9889 to make it a perfect square?
  1.    84
  2.    88
  3.    108
  4.    74
  5.    None of these
 Discuss Question
Answer: Option B. -> 88


992 = 9801
1002 = 10000
9801 < 9889 < 10000
Required least number = 9889-9801 = 88


Question 417. In how many different ways can the letters of word 'POWERS' be arranged?
  1.    640
  2.    720
  3.    1440
  4.    360
  5.    None of these
 Discuss Question
Answer: Option B. -> 720


The word POWERS consists of 6 distinct letters

Number of arrangements = 6!

6 * 5 * 4 * 3 * 2 * 1 = 720


Question 418. The difference between the circumferences of two circles id 132 cms. and the radius of smaller circle 14 cms. What is the radius of larger circle?
  1.    14 cms
  2.    21 cms
  3.    30 cms
  4.    42 cms
  5.    None of these
 Discuss Question
Answer: Option E. -> None of these


Le the radius of larger circle be r cm.

2 Pi = (r - 14) = 132

= r - 14 = (132 * 7) / (2 * 22)  = 21

r = 21 + 14 = 35 cms


Question 419. Five ninth of sixty two percent of a number is equal to 2790. What is the number?
  1.    8100
  2.    7200
  3.    6300
  4.    8500
  5.    None of these
 Discuss Question
Answer: Option A. -> 8100


Let be the number be x.

5/9 * 62/100 * x = 2790

=>x = 2790 * 9 100/(5*62)   =  8100


Question 420. In a test, minimum passing percentage for reserved and unreserved category is 40% and 54% respectively. A candidate from unreserved category secured 300 marks and failed by 24 marks. What are the minimum passing marks of reserved category in that test?
  1.    280
  2.    254
  3.    230
  4.    240
  5.    None of these
 Discuss Question
Answer: Option D. -> 240


let the maximum marks be x.

54% of x = 300 + 24

=> x * 54/100 = 324

=> x = 324 * 100/54 = 600

Required minimum marks

= 40 * 600/100  = 240



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