GATE Practice Question and Answer

Q: Find the next number in the following number series? 410, 409, 413, 404, ? 2147 0

  • 1
    412
    Correct
    Wrong
  • 2
    415
    Correct
    Wrong
  • 3
    418
    Correct
    Wrong
  • 4
    420
    Correct
    Wrong
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Answer : 4. "420"
Explanation :

Answer: D) 420 Explanation: The given number series 410, 409, 413, 404, ? , follows a pattern that  410 410 - 13 = 409409 + 22 = 413413 - 33 = 404404 + 42 = 420   Hence, the next number in the given series is 420.

Q: A room contains 3 brown, 5 black and 4 white chairs. Two chairs are picked and are put in the lawn. What is the probability that none of the chairs picked is white ? 2147 0

  • 1
    14/33
    Correct
    Wrong
  • 2
    14/55
    Correct
    Wrong
  • 3
    12/55
    Correct
    Wrong
  • 4
    13/33
    Correct
    Wrong
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Answer : 1. "14/33"
Explanation :

Answer: A) 14/33 Explanation: Total number of chairs = (3 + 5 + 4) = 12. Let S be the sample space. Then, n(s)= Number of ways of picking 2 chairs out of 12 = 12×11/2×1 = 66 Let n(E) = number of events of selecting 2 chairs for selecting no white chairs. => 8C2 = 8×7/2×1 = 28 Therefore required probability = 28/66 = 14/33.

Q: Rearrange the following sentences ( 2146 0

  • 1
    , (
    Correct
    Wrong
  • 2
    , (
    Correct
    Wrong
  • 3
    , (
    Correct
    Wrong
  • 4
    , (E) and (F) in the proper sequence to form a meaningful paragraph. (
    Correct
    Wrong
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Answer : 2. ", ("
Explanation :

Answer: B) E C F A D B Explanation:

Q: Which Indian city is named after the snake Anantha of Lord Vishnu? 2146 0

  • 1
    Trivandrum
    Correct
    Wrong
  • 2
    Tiruchirappalli
    Correct
    Wrong
  • 3
    Tanjavore
    Correct
    Wrong
  • 4
    Vellore
    Correct
    Wrong
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Answer : 1. "Trivandrum"
Explanation :

Answer: A) Trivandrum Explanation: Thiruvananthapuram also known as Trivandrum, is the capital and the largest city of the Indian state of Kerala is named after the snake Anantha of Lord Vishnu.

Q: which of the following statements are correct 2146 0

  • 1
    Sir Richard Arkwright - Father of industrial revolution
    Correct
    Wrong
  • 2
    Michael Faraday - Discovered Benzene and invented Bunsen Burner
    Correct
    Wrong
  • 3
    Thomas Alva Edison - phonograph and motion picture camera
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: Inventors and their Inventions ::   Sir Richard Arkwright - Father of industrial revolution.   Michael Faraday - Discovered Benzene and invented Bunsen Burner.   Thomas Alva Edison - Invented Phonograph and motion picture camera.

Q: The percentage of irrigated land in India is about 2146 0

  • 1
    66%
    Correct
    Wrong
  • 2
    35%
    Correct
    Wrong
  • 3
    71%
    Correct
    Wrong
  • 4
    22%
    Correct
    Wrong
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Answer : 2. "35%"
Explanation :

Answer: B) 35% Explanation: According to World Bank Indicator India - Land use: Agriculture Land - 1797090 sq. Km (about 60.4%).  Forest Area - 677598 sq. Km. (about 22.08%).  Agriculture Irrigated land - 35 %.

Q: Arrange the following words in an appropriate order 1. Rainbow   2. Rain   3. Sun    4. Happy    5. Child 2144 0

  • 1
    4, 2, 3, 5, 1
    Correct
    Wrong
  • 2
    4, 5, 1, 2, 3
    Correct
    Wrong
  • 3
    2, 1, 4, 5, 3
    Correct
    Wrong
  • 4
    2, 3, 1, 5, 4
    Correct
    Wrong
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Answer : 4. "2, 3, 1, 5, 4"
Explanation :

Answer: D) 2, 3, 1, 5, 4 Explanation: Firstly Rain falls and then Sun comes and Rainbow forms. After that Child sees the rainbow and feels Happy.

Q: If a barometric reading is falling, this usually indicates what 2143 0

  • 1
    Increasing pressure
    Correct
    Wrong
  • 2
    Decreasing pressure
    Correct
    Wrong
  • 3
    No pressure
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 2. "Decreasing pressure"
Explanation :

Answer: B) Decreasing pressure Explanation: A barometer is a tool that measures air pressure A rising barometer indicates increasing air pressure, a falling barometer indicates decreasing air pressure. In space, there is a nearly complete vacuum, so the air pressure is zero.

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