Aptitude Questions Practice Question and Answer

Q: A flagstaff 17.5 m high casts a shadow of length 40.25 m. What will be the height of a building, which casts a shadow of length 28.75 m under similar conditions ? 1287 1

  • 1
    14 cm
    Correct
    Wrong
  • 2
    13.5 cm
    Correct
    Wrong
  • 3
    12.5 cm
    Correct
    Wrong
  • 4
    11.4 cm
    Correct
    Wrong
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Answer : 3. "12.5 cm"
Explanation :

Answer: C) 12.5 cm Explanation: Let the required height of the building be x meter More shadow length, More height(direct proportion) Hence we can write as (shadow length) 40.25 : 28.75 :: 17.5 : xтЗТ 40.25 ├Ч x = 28.75 ├Ч 17.5тЗТ x = 28.75 ├Ч 17.5/40.25= 2875 ├Ч 175/40250= 2875 ├Ч 7/1610= 2875/230= 575/46= 12.5 cm

Q: A vertical toy 18 cm long casts a shadow 8 cm long on the ground. At the same time a pole casts a shadow 48 m. long on the ground. Then find the height of the pole ? 3407 0

  • 1
    1080 cm
    Correct
    Wrong
  • 2
    180 m
    Correct
    Wrong
  • 3
    108 m
    Correct
    Wrong
  • 4
    118 cm
    Correct
    Wrong
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Answer : 3. "108 m"
Explanation :

Answer: C) 108 m Explanation: We know the rule that, ┬а At particular time for all object , ratio of height and shadow are same. ┬а Let the height of the pole be 'H' ┬а Then ┬а188=H48 ┬а => H = 108 m.

Q: Solve the equation 122x+1┬а=┬а1┬а? 4081 0

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

Answer: A) -1/2 Explanation: Rewrite equation as┬а122x+1┬а=┬а120 ┬а Leads to 2x + 1 = 0┬а ┬а Solve for x : x = -1/2

Q: In a queue, Shankar is ninth from the rear end. Althaf's place is eighth from the front. Nitu is standing between the two. What could be the minimum numbers of boys standing in the queue ? 2418 0

  • 1
    18
    Correct
    Wrong
  • 2
    14
    Correct
    Wrong
  • 3
    22
    Correct
    Wrong
  • 4
    24
    Correct
    Wrong
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Answer : 2. "14"
Explanation :

Answer: B) 14 Explanation: 1 2 3 4 5 6(Shankar) 7(Nitu) 8(Althaf) 9 10 11 12 13 14Here, Althaf is 8th from front, Shankar is 9th from rear end and Nitu is between themSo minimum no. of boys standing in the queue = 14

Q: What is the number of digits in┬а333? Given that log3 = 0.47712? 5528 0

  • 1
    12
    Correct
    Wrong
  • 2
    13
    Correct
    Wrong
  • 3
    14
    Correct
    Wrong
  • 4
    15
    Correct
    Wrong
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Answer : 2. "13"
Explanation :

Answer: B) 13 Explanation: ┬аLet ┬а┬аLet┬аx=333┬а=┬а333 ┬а ┬аThen,┬аlogx┬а=┬а33┬аlog3┬а┬а ┬а = 27 x 0.47712 = 12.88224┬а ┬а Since the characteristic in the resultant value of log x is 12 ┬а тИ┤The number of digits in x is (12 + 1) = 13┬а ┬а Hence the required number of digits in┬а333is 13.

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