GATE Practice Question and Answer

Q: Two numbers are respectively 40% and 30% more than a third number. The second number expressed in terms of percentage of the first is ? 2161 0

  • 1
    92.8%
    Correct
    Wrong
  • 2
    84.23%
    Correct
    Wrong
  • 3
    87.14%
    Correct
    Wrong
  • 4
    94.1%
    Correct
    Wrong
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Answer : 1. "92.8%"
Explanation :

Answer: A) 92.8% Explanation: Here, x = 40 and y = 30;Therefore second number= [[100+y100+x] x 100 ]% of first number= [[100+y100+x] x 100 ]% of first numberSecond number = 92.8% of the first number.

Q: The complexity of linear search algorithm is 2159 0

  • 1
    O(n2)
    Correct
    Wrong
  • 2
    O(n log n)
    Correct
    Wrong
  • 3
    O(n)
    Correct
    Wrong
  • 4
    O(log n)
    Correct
    Wrong
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Answer : 3. "O(n)"
Explanation :

Answer: C) O(n) Explanation: The worst case complexity of linear search is O(n).

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 ? 2159 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: 0 divided by 0 2153 0

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

Answer: D) Indeterminate Explanation: Indeterminate are those,which mathematics can’t determine. Because we don’t actually know which one is the exact answer for this due to having lots of results for this. Explanation:: Let us think by this analogy that, 0 / 1 = 0 0 / 2 = 0 ………… ……….. we can say 0 / n = 0 from this we can write, 0/0 = 0 Again, another analogy,(from limiting concept of 1/0 = infinity) 1 / 0 = +∞ or -∞ 2 /0 = +∞ or -∞ ……… .……. we can say 0 / 0 = ∞ Again, another analogy, 1 / 1 = 1 2/2 = 1 .…….. ……….. we can say, 0/0 = 1 Now, you see it’s confusing. Every analog is mathematically correct then which one is the right answer for 0/0.  Therefore Mathematics can’t determine this fact. So, 0/0 is indeterminate.

Q: What has no beginning, end or middle? 2150 0

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Answer :
Explanation :

A Donut or Doughnut. Anything in the shape of a torus.

Q: The marked price of a Watch is Rs.8400. It is to be sold at Rs.6896 at two successive discounts. If the first discount is 12%, the second discount is ? 2150 0

  • 1
    7.2 %
    Correct
    Wrong
  • 2
    9.14 %
    Correct
    Wrong
  • 3
    7.13 %
    Correct
    Wrong
  • 4
    6.709 %
    Correct
    Wrong
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Answer : 4. "6.709 %"
Explanation :

Answer: D) 6.709 % Explanation: (100-x)%  of 88% of 8400 = 6896   => 100-x10088100x8400 = 6896 => x = 6.709%

Q: Who wrote the social contract? 2149 0

  • 1
    Jean-Jacques Rousseau
    Correct
    Wrong
  • 2
    Immanuel Kant
    Correct
    Wrong
  • 3
    John Locke
    Correct
    Wrong
  • 4
    Voltaire
    Correct
    Wrong
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Answer : 1. "Jean-Jacques Rousseau"
Explanation :

Answer: A) Jean-Jacques Rousseau Explanation: Jean-Jacques Rousseau (1712–1778), in his influential 1762 treatise The Social Contract, outlined a different version of social contract theory, as the foundations of political rights based on unlimited popular sovereignty.

Q: Who has been elected as Chairman and CEO of KPMG India in 2017 ? 2147 0

  • 1
    Richard Rekhy
    Correct
    Wrong
  • 2
    John Veihmeyer
    Correct
    Wrong
  • 3
    Subir Moitra
    Correct
    Wrong
  • 4
    Arun M Kumar
    Correct
    Wrong
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Answer : 4. "Arun M Kumar"
Explanation :

Answer: D) Arun M Kumar Explanation: KPMG in India announced the election of Arun M. Kumar as Chairman and Chief Executive Officer of the firm for a five-year term, on February 5, 2017.Arun Kumar succeeds Richard Rekhy, who led the firm as CEO for over four years. Arun Kumar was elected by the KPMG India Board and ratified by the India Partners. The firm executed a well-defined governance process for the selection of the CEO that aligns with the objective of building on its success as well as attracting the best talent available for this role. Arun Kumar brings a wealth of international leadership experience to KPMG India, including his tenure in public service in the United States for the last three years as Assistant Secretary of Commerce for Global Markets and Director General of US and Foreign Commercial Service in the Obama Administration.

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