GATE Practice Question and Answer

Q: Find the odd one out of the group ? 2196 0

  • 1
    708
    Correct
    Wrong
  • 2
    392
    Correct
    Wrong
  • 3
    618
    Correct
    Wrong
  • 4
    816
    Correct
    Wrong
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Answer : 2. "392"
Explanation :

Answer: B) 392 Explanation: The sum of the digits in 708, 618 and 816 is 15, but not in 392.

Q: If L exceeds K by 30%, then K is less than L by ? 2196 0

  • 1
    14 2/5 %
    Correct
    Wrong
  • 2
    23 1/3 %
    Correct
    Wrong
  • 3
    20 %
    Correct
    Wrong
  • 4
    16 %
    Correct
    Wrong
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Answer : 2. "23 1/3 %"
Explanation :

Answer: B) 23 1/3 % Explanation: K = 100 L = 130130------ 30100------- ? => 23 1/13 %

Q: Three unbiased coins are tossed. What is the probability of getting at most two heads ? 2194 0

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

Answer: D) 3/4 Explanation: Let S be the sample space.Here n(S)= 23 = 8Let E be the event of getting atmost two heads. Then,n(E) = {(H,T,T), (T,H,T), (T,T,H), (H,H,T), (T,H,H), (H,T,H)}Required probability = n(E)/n(S) = 6/8 = 3/4.

Q: Buoyancy depends on 2194 0

  • 1
    the mass of the liquid displaced
    Correct
    Wrong
  • 2
    the mass of the body
    Correct
    Wrong
  • 3
    the depth to which the body is immersed
    Correct
    Wrong
  • 4
    the shaped of the body
    Correct
    Wrong
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Answer : 1. "the mass of the liquid displaced"
Explanation :

Answer: A) the mass of the liquid displaced Explanation: Buoyancy or Upthrust, is an upward force exerted by a fluid that opposes the weight of an immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid.

Q: Number Challenge 2193 0

  • 1
    9
    Correct
    Wrong
  • 2
    11
    Correct
    Wrong
  • 3
    13
    Correct
    Wrong
  • 4
    15
    Correct
    Wrong
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Answer : 2. "11"
Explanation :

Answer: B) 11 Explanation: Half the Product of Number in the upper & lower box gives the number in the middle box. i.e. 18 x 4/2 = 36 15 x 6/2 = 45 In the same way  8 x N/2 = 44 => N = 11.

Q: A passenger train is moving at a speed of 120 km/hr. If the length of the train is 101 meters, how long will it take to cross a railway platform 154 meters long ? 2192 0

  • 1
    6.24 sec
    Correct
    Wrong
  • 2
    6.58 sec
    Correct
    Wrong
  • 3
    7.325 sec
    Correct
    Wrong
  • 4
    7.65 sec
    Correct
    Wrong
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Answer : 4. "7.65 sec"
Explanation :

Answer: D) 7.65 sec Explanation: Here total distance = 154 + 101 = 255 mtsGiven speed = 120 kmph = 120x5/18 m/secHence, Time = d/s = 255x18/120x5 = 7.65 sec

Q: What is the largest landlocked country in the world? 2192 0

  • 1
    Kazakhstan
    Correct
    Wrong
  • 2
    Turkmenistan
    Correct
    Wrong
  • 3
    Russia
    Correct
    Wrong
  • 4
    Uzbekistan
    Correct
    Wrong
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Answer : 1. "Kazakhstan"
Explanation :

Answer: A) Kazakhstan Explanation: Kazakhstan is the largest landlocked country in the world with an area of 2,724,900 km² and the ninth largest in the world. Kazakhstan is located in Central Asia bordering 5 countries, China, Kyrgyzstan, Russia, Turkmenistan, and Uzbekistan.

Q: 12% of 70,000 is 2191 0

  • 1
    8400
    Correct
    Wrong
  • 2
    7200
    Correct
    Wrong
  • 3
    6000
    Correct
    Wrong
  • 4
    5600
    Correct
    Wrong
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Answer : 1. "8400"
Explanation :

Answer: A) 8400 Explanation: 12% of 70,000 => 12 x 70,000/100 => 8400   Hence, 12% of 70,000 = 8,400

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