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Quantitative Aptitude

NUMERICAL ABILITY COMBINED MCQs

Total Questions : 450 | Page 45 of 45 pages
Question 441. Directions(16-20): What will come in place of the question mark (?) in the following questions ?

16/29 * 87/128 * 16/21  = ?

  1.    2/7
  2.    3/7
  3.    2/9
  4.    3/8
  5.    None of these
 Discuss Question
Answer: Option A. -> 2/7


? = 16/29 * 87/128 * 16/21 = 2/7

? = 2/7


Question 442.     -17-94-22-39+627 = ?
  1.    454
  2.    455
  3.    458
  4.    451
  5.    None of these
 Discuss Question
Answer: Option B. -> 455


? = -17-94-22-39+627

? = - 172 + 627

? = 455


Question 443. √4489 - √2601 =√?
  1.    16
  2.    (256)2
  3.    -16
  4.    256
  5.    None of these
 Discuss Question
Answer: Option D. -> 256


67 - 51 = √?
=> 16 = √?
=> ? = 16 * 16 = 256


Question 444. (0.8 * 8800 ÷ 16) * 4 = ?
  1.    1750
  2.    1756
  3.    1766
  4.    1760
  5.    None of these
 Discuss Question
Answer: Option D. -> 1760


(0.8 * 8800 *4)/16  =  1760


Question 445. (√7921 - 42) * 6 = ?
  1.    286
  2.    282
  3.    284
  4.    285
  5.    None of these
 Discuss Question
Answer: Option B. -> 282


? = (√7921 - 42) * 6 ? = (89-42) * 6 ? = 47 * 6 = 282


Question 446. What will be the average of following set of scores ?

69, 89, 34, 76, 54, 68, 28, 46

  1.    53
  2.    55
  3.    57
  4.    56
  5.    None of these
 Discuss Question
Answer: Option E. -> None of these


Required average = 

(69 + 89 + 34 + 76 + 54 + 68 + 28 + 46)/8 

= 464/8  

= 58


Question 447. What will be the compound interest accrued on a principal of Rs. 32,500 at the rate of 5 p.c.p.a. after a period of 2 years.
  1.    Rs. 3332.78
  2.    Rs. 3335.35
  3.    Rs. 3333.27
  4.    Rs. 3331.25
  5.    None of these
 Discuss Question
Answer: Option D. -> Rs. 3331.25


C.I = P[(1 + R/100)T - 1 ]
= 32500[(1 + 5/100)2 - 1]
= 32500[(21/20)2 - 1]
= 32500 * 41/400 = Rs. 3331.25


Question 448. A train covers 430 km in 5 hours. The speed of a bike is half the speed of the train. How much time will the bike take to cover a distance of 301 km ?
  1.    6 hours
  2.    7 hours
  3.    8 hours
  4.    9 hours
  5.    None of these
 Discuss Question
Answer: Option B. -> 7 hours


Speed of train = Distance travelled/Time spent

= 430/5

= 86 km/hr

Speed of bike = 86/2 = 43km/hr.

Time taken by bike to cover a distance of 301 km

= Distance/Speed  = 301/43 = 7 hours.


Question 449. The average of five numbers is 50.8. The average of the first and the second numbers is 29. The average of the fourth and the fifth numbers is 66.5. What is the third number?
  1.    65
  2.    73
  3.    61
  4.    77
  5.    None of these
 Discuss Question
Answer: Option E. -> None of these


Third number = 5 * 50.8 - 29 * 2 - 66.5 * 2 

= 254 - 58 - 133 = 63


Question 450. What will be the resultant if the square of 109 is subtracted from the square of 210 ?
  1.    32220
  2.    32209
  3.    32291
  4.    32217
  5.    None of these
 Discuss Question
Answer: Option E. -> None of these


Required answer 


= (210)2 - (109)2

= (210 + 109) (210 - 109)

= (319)(101) = 32219


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