Quantitative Aptitude Practice Question and Answer

Q: There is a 3 digited number. 3rd digit is the square root of the 1st digit. 2nd digit is the sum of 1st and 3rd. And that number is divisible by 2,3,6,7. What is that number? 935 0

  • 1
    121
    Correct
    Wrong
  • 2
    943
    Correct
    Wrong
  • 3
    462
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 3. "462"
Explanation :

Answer: C) 462 Explanation: Assume that the number is taken as XYZ.Condition 1 => Z = sq.root(x) => Possible digits of X is 1,4,9Condition 2 => Y = X + ZX Y Z1 2 14 6 29 12 3 => (wrong because it is 4 digit.) and 121 is not divisible by 2 The answer is 462.

Q: Find the area of the square whose side is equal to the diagonal of a rectangle of length 3 cm and breadth 4 cm. 928 0

  • 1
    25 sq.cm
    Correct
    Wrong
  • 2
    16 sq.cm
    Correct
    Wrong
  • 3
    9 sq.cm
    Correct
    Wrong
  • 4
    4 sq.cm
    Correct
    Wrong
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Answer : 1. "25 sq.cm"
Explanation :

Answer: A) 25 sq.cm Explanation: Given length of the rectangle = 3 cm Breadth of the rectangle = 4 cm Then, the diagonal of the rectangle D = 32 + 42 = 25 = 5 Then, it implies side of square = 5 cm We know that Area of square = S x S = 5 x 5 = 25 sq.cm.

Q: 19 friends went to a restaurant for a combined weekend dinner party. 13 of them spent Rs. 79 each on their dinner and the rest spent Rs. 4 more than the average expenditure of all the 19. What was the total money spent by them? 917 0

  • 1
    Rs. 1398.96
    Correct
    Wrong
  • 2
    Rs. 1457.09
    Correct
    Wrong
  • 3
    Rs. 1662.35
    Correct
    Wrong
  • 4
    Rs. 1536.07
    Correct
    Wrong
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Answer : 4. "Rs. 1536.07"
Explanation :

Answer: D) Rs. 1536.07 Explanation: Let average expenditure was Rs. R 13 x 79 + 6x(R + 4) = 19R => R = Rs. 80.84 Total money = 19 x 80.84 = Rs. 1536.07.

Q: Find the regular polygon whose interior angel is 150 more than exterior angle. note the total sum of interior and exterior angle should be 180 at one point ? 914 0

  • 1
    12
    Correct
    Wrong
  • 2
    24
    Correct
    Wrong
  • 3
    36
    Correct
    Wrong
  • 4
    6
    Correct
    Wrong
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Answer : 2. "24"
Explanation :

Answer: B) 24 Explanation: Sum of Interior angle is 180 .and it is given that interior angle is 150 more than exterior,so let exterior angle is x then interior will be x+150 now , interior + exterior =180x+150+x=180x=15 now , number of sides of polygon = 360 / exterior anglen = 360 / 15n = 24

Q: There are 3 sections with 5 questions each. If four questions are selected from each section, the chance of getting different questions is ? 913 0

  • 1
    1000
    Correct
    Wrong
  • 2
    625
    Correct
    Wrong
  • 3
    525
    Correct
    Wrong
  • 4
    125
    Correct
    Wrong
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Answer : 4. "125"
Explanation :

Answer: D) 125 Explanation: Methods for selecting 4 questions out of 5 in the first section = 5 x 4 x 3 x 2 x 1/4 x 3 x 2 x 1 = 5. Similarly for other 2 sections also i.e 5 and 5 So total methods = 5 x 5 x 5 = 125.

Q: Find the length of a train if it takes 10 seconds to cross a pole and double of this time to cross a platform of length 200 mts ? 892 0

  • 1
    180 mts
    Correct
    Wrong
  • 2
    190 mts
    Correct
    Wrong
  • 3
    200 mts
    Correct
    Wrong
  • 4
    210 mts
    Correct
    Wrong
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Answer : 3. "200 mts"
Explanation :

Answer: C) 200 mts Explanation: Let the length of the train be 'L' mts let the speed of the train be 'S' m/s Given it crosses a pole in 10 sec=> L/S = 10 ......(1)Given it takes 20 sec (double of pole) to cross a platform of length 200 mts => (L + 200)/S = 20 => L/S + 200/S = 20 But from (1) L/S = 10 => 200/S = 20 - 10 => S = 20 m/s Then, from (1) => L = 10 x 20 = 200 mts. Hence, the length of the train = 200 mts.

Q: 40% of 80? 884 0

  • 1
    36
    Correct
    Wrong
  • 2
    32
    Correct
    Wrong
  • 3
    42
    Correct
    Wrong
  • 4
    44
    Correct
    Wrong
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Answer : 2. "32"
Explanation :

Answer: B) 32 Explanation: Here 40% of 80 is given as 40100 x 80 = 8 x 4 = 32

Q: How many minutes does a watch lose per day, if its hands coincide every 64 minutes ? 848 0

  • 1
    36 7/9 min
    Correct
    Wrong
  • 2
    32 8/11 min
    Correct
    Wrong
  • 3
    34 3/11 min
    Correct
    Wrong
  • 4
    65 5/11 min
    Correct
    Wrong
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Answer : 2. "32 8/11 min"
Explanation :

Answer: B) 32 8/11 min Explanation: 55 min. spaces are covered in 60 min. 60 min. spaces are covered in min. = min. Loss in 64 min. = min. Loss in 24 hrs = min. = min.

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