Quantitative Aptitude Practice Question and Answer

Q: Find the odd man out in the following number series? 71, 88, 113, 150, 203, 277 1720 0

  • 1
    277
    Correct
    Wrong
  • 2
    203
    Correct
    Wrong
  • 3
    150
    Correct
    Wrong
  • 4
    113
    Correct
    Wrong
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Answer : 1. "277"
Explanation :

Answer: A) 277 Explanation: The given number series is    71      88       113       150       203          277    +17    +25       +37      +53        +74         +8      +12        +16       +21             +4          +4         +5   The series should be  71  88  112   150    203   276 i.e, the differences of the difference should be +4.   Hence, the odd man in the given series is 277.

Q: If a student walks at the rate of 4 mts/min from his home, he is 4 minutes late for school, if he walks at the rate of 6 mts/min he reaches half an hour earlier. How far is his school from his home ? 1719 0

  • 1
    100 mts
    Correct
    Wrong
  • 2
    96 mts
    Correct
    Wrong
  • 3
    98 mts
    Correct
    Wrong
  • 4
    120 mts
    Correct
    Wrong
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Answer : 3. "98 mts"
Explanation :

Answer: C) 98 mts Explanation: Let the distance between home and school is 'x'.Let actual time to reach be 't'.Thus, x/4 = t + 4 ---- (1)and x/6 = t - 30 -----(2)Solving equation (1) and (2)=> x = 98 mts.

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Answer : 1. "87"
Explanation :

Answer: A) 87 Explanation: Cp1 = p2 - p1 , Cp2 = p3 - p2 ......Cp23 = p24 - p23Sum of series = (p2-p1) + (p3-p2) + .....(p23-p22) + (p24-p23)All terms get cancelled, except p1 = 2 and p24 = 89 So Sum = -p1 + p24Sum of series = -2 + 89 = 87

Q: In how many ways the letters of the word NUMERICAL can be arranged so that the consonants always occupy the even places ? 1716 0

  • 1
    5!
    Correct
    Wrong
  • 2
    6!
    Correct
    Wrong
  • 3
    4!
    Correct
    Wrong
  • 4
    Can't determine
    Correct
    Wrong
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Answer : 4. "Can't determine"
Explanation :

Answer: D) Can't determine Explanation: NUMERICAL has 9 positions in which 2, 4, 6, 8 are even positions. And it contains 5 consonents i.e, N, M, R, C & L. Hence this cannot be done as 5 letters cannot be placed in 4 positions. Therefore, Can't be determined.

Q: Mary is 12 years younger to Pinky. After 3 years, the ratio of their ages will be 5:8. If the present age of Sam is the sum of ages of Mary and Pinky, then what was the age of Sam 15 years back ? 1714 0

  • 1
    31 years
    Correct
    Wrong
  • 2
    37 years
    Correct
    Wrong
  • 3
    46 years
    Correct
    Wrong
  • 4
    29 years
    Correct
    Wrong
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Answer : 1. "31 years"
Explanation :

Answer: A) 31 years Explanation: Let the present age of Pinky be x years   Then the age of Mary is x - 12 years   After 3 years,   Ratio of  MaryPinky = x - 9x + 3 = 58   8x - 72 = 5x +15   => 3x = 87   => x = 29   => Age of Pinky = 29 years   => Age of Mary = 29 - 12 = 17 years   Present age of Sam = 29 + 17 = 46   Before 15 years Sam age = 46 - 15 = 31 years.

Q: The ratio of earnings of A and B is 4:5. If the earnings of A increase by 20% and the earnings of B decrease by 20%, the new ratio of their earnings becomes 6:5. What are A's earnings? 1712 0

  • 1
    Rs.22,000
    Correct
    Wrong
  • 2
    Rs.27,500
    Correct
    Wrong
  • 3
    Rs. 26,400
    Correct
    Wrong
  • 4
    Cannot be determined
    Correct
    Wrong
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Answer : 4. "Cannot be determined"
Explanation :

Answer: D) Cannot be determined Explanation:

Q: Find the odd one out of the series ? 35, 48, 54, 63, 81, 105 1710 0

  • 1
    63
    Correct
    Wrong
  • 2
    48
    Correct
    Wrong
  • 3
    35
    Correct
    Wrong
  • 4
    81
    Correct
    Wrong
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Answer : 3. "35"
Explanation :

Answer: C) 35 Explanation: 48, 54, 63, 81 and 105 are divisible by 3 but not 35.

Q: One girl can eat 112 chocolates in half a minute, and her boy friend can eat half as many in twice the length of time. How many chocolates can both boy and girl eat in 12 seconds ? 1708 0

  • 1
    44
    Correct
    Wrong
  • 2
    32
    Correct
    Wrong
  • 3
    56
    Correct
    Wrong
  • 4
    49
    Correct
    Wrong
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Answer : 3. "56"
Explanation :

Answer: C) 56 Explanation: Girl eats 112 chocolates in 30 sec so she can eat in 12 sec is 12 x 112/30 = 44.8 chocolates.   Her boy friend can eat one-half of 112 in twice of 30 sec so he can eat 56 in 60 sec Then he can eat in 12 sec is 56 x 12/60 = 11.2 chocolates.   Hence, together they can eat = 44.8 + 11.2 =56 chocolates in 12 seconds.

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