Quantitative Aptitude Practice Question and Answer

Q: Simplify the fraction? 5 (2/7) - 3 (1/14) - 2 (1/14) - 1 (1/7) = ? + 3 (1/17) 1930 0

  • 1
    -4 (1/17)
    Correct
    Wrong
  • 2
    5 (2/17)
    Correct
    Wrong
  • 3
    -2 (1/17)
    Correct
    Wrong
  • 4
    3 (3/17)
    Correct
    Wrong
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Answer : 1. "-4 (1/17)"
Explanation :

Answer: A) -4 (1/17) Explanation: Given fraction is┬а5 (2/7) - 3 (1/14) - 2 (1/14) - 1 (1/7) =┬а?┬а+ 3 (1/17)┬а It can be written as┬а (5 - 3 - 2 - 1) + (2/7 - 1/14 - 1/14 - 1/7) = ? +┬а┬а3 (1/17)┬а -1 + 0 -┬а3 (1/17) = ? => ? = -4 (1/17)

Q: What will be added to the unit digits of the number 86236 so that┬аnumber will be divisible by 9 ┬а? 1929 0

  • 1
    1
    Correct
    Wrong
  • 2
    2
    Correct
    Wrong
  • 3
    3
    Correct
    Wrong
  • 4
    0
    Correct
    Wrong
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Answer : 2. "2"
Explanation :

Answer: B) 2 Explanation: A number is divisible by 9 only if the sum of the digits of the number is divisible by 9. Here 86236 = 8 + 6 + 2 + 3 + 6 = 25 We must add 2 to 25 to become 27 which is divisible by 9.

Q: K and L start a business jointly. L invests Rs.16000 for 8 months and L remains in the business for 4 months. Out of the total profit B claims 2/7th share. How much money is contributed by B ┬а? 1924 0

  • 1
    Rs. 9040
    Correct
    Wrong
  • 2
    Rs. 10,400
    Correct
    Wrong
  • 3
    Rs. 12,800
    Correct
    Wrong
  • 4
    Rs. 6350
    Correct
    Wrong
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Answer : 3. "Rs. 12,800"
Explanation :

Answer: C) Rs. 12,800 Explanation: 16x8 : Px4 = 5:2 P = 12.8 => Rs.12,800

Q: In the following number series only one number is wrong. Find out the wrong number ? 6, 15, 35, 63, 143, 221, 323 1924 0

  • 1
    143
    Correct
    Wrong
  • 2
    63
    Correct
    Wrong
  • 3
    323
    Correct
    Wrong
  • 4
    35
    Correct
    Wrong
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Answer : 2. "63"
Explanation :

Answer: B) 63 Explanation: Here the series follows the pattern that, product of succesive prime numbers i.e, ┬а2 ├Ч 3 = 6 ┬а3 ├Ч 5 = 15 ┬а5 ├Ч 7 = 35 ┬а7 ├Ч 11 = 77 ┬а11 ├Ч 13 = 143 ┬а13 ├Ч 17 = 221 ┬а17 ├Ч 19 = 323 So here in place of 77 the number 63 is written. So the wrong number is 63.

Q: An express train takes 4 seconds to enter tunnel which is 1 km long. If it is traveling at 108 km an hour, how long will it take to pass completely through the tunnel ? 1924 0

  • 1
    33 sec
    Correct
    Wrong
  • 2
    37.33 sec
    Correct
    Wrong
  • 3
    36.43 sec
    Correct
    Wrong
  • 4
    32 sec
    Correct
    Wrong
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Answer : 2. "37.33 sec"
Explanation :

Answer: B) 37.33 sec Explanation: Speed = 108 km/hrenter a tunnel,, means that the train covers a distance equal to its own lengthso (108 x 5/18) = x/4 where x= length of trainhence x = 120 mtrsto pass completely train has to travel a distance = (x + tunnel length) that is 1120 mtrs.so (1120/t) = (108x5/18)t = 37.33 sec

Q: Find the next number in the given number series? 0, 3, 8, 15, 24, ? 1922 0

  • 1
    35
    Correct
    Wrong
  • 2
    37
    Correct
    Wrong
  • 3
    34
    Correct
    Wrong
  • 4
    36
    Correct
    Wrong
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Answer : 1. "35"
Explanation :

Answer: A) 35 Explanation: Here the given number series is 0, 3, 8, 15, 24, ? The next number in the given series can be found such a way that the number series follows a pattern, 22┬а-┬а4┬а=┬а032┬а-┬а6┬а=┬а342┬а┬а-┬а8┬а=┬а852┬а-┬а10┬а=┬а1562┬а-┬а12┬а=┬а2472┬а-┬а14┬а=┬а35Hence,┬аthe┬аnext┬аnumber┬аin┬аthe┬аiven┬аseries┬аis┬а35.

Q: Twenty times a positive integer is less than its square by 96. What is the integer ? 1920 0

  • 1
    42
    Correct
    Wrong
  • 2
    36
    Correct
    Wrong
  • 3
    48
    Correct
    Wrong
  • 4
    24
    Correct
    Wrong
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Answer : 4. "24"
Explanation :

Answer: D) 24 Explanation: Let the integer be x. Then, x2 - 20x = 96 (x + 4)(x - 24) = 0 x = 24

Q: A work which could be finished in 11 days was finished 4 days earlier after 4 more men joined. The number of men employed was ? 1918 0

  • 1
    7
    Correct
    Wrong
  • 2
    8
    Correct
    Wrong
  • 3
    9
    Correct
    Wrong
  • 4
    10
    Correct
    Wrong
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Answer : 1. "7"
Explanation :

Answer: A) 7 Explanation: As the work is sameM1D1 = M2D2 Here Let the number of men employed was M=> 11M = 7(M+4)=> 11M - 7M = 28=> M = 7

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