GATE Practice Question and Answer

Q: 14 persons are seated around a circular table. Find the probability that 3 particular persons always seated together. 1920 0

  • 1
    11/379
    Correct
    Wrong
  • 2
    21/628
    Correct
    Wrong
  • 3
    24/625
    Correct
    Wrong
  • 4
    26/247
    Correct
    Wrong
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Answer : 3. "24/625"
Explanation :

Answer: C) 24/625 Explanation: Total no of ways = (14 – 1)! = 13! Number of favorable ways = (12 – 1)! = 11!   So, required probability = 11!×3!13! = 39916800×66227020800 = 24625

Q: Find the next number in the series   143 143 136 110 ? 3127 0

  • 1
    91
    Correct
    Wrong
  • 2
    35
    Correct
    Wrong
  • 3
    47
    Correct
    Wrong
  • 4
    69
    Correct
    Wrong
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Answer : 3. "47"
Explanation :

Answer: C) 47 Explanation: The next number in the series is 143 143 136 110       0    7      26 (Differences)  13 - 1 , 23 - 1, 33 - 1, 43 - 1,...Now the next number is given by110 - (43 - 1) = 110 - 63 = 47.

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Answer :
Explanation :

PONDICHERRY is the Indian City with 11 Letters.   Fruit Name : CHERRY Soap Name : RIN Bird Name : HEN Organ : CHIN Used by Student : PEN

Q: Friction can be reduced by changing from 1819 0

  • 1
    Static to Dynamic
    Correct
    Wrong
  • 2
    Rolling to Sliding
    Correct
    Wrong
  • 3
    Dynamic to Static
    Correct
    Wrong
  • 4
    Sliding to Rolling
    Correct
    Wrong
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Answer : 4. "Sliding to Rolling"
Explanation :

Answer: D) Sliding to Rolling Explanation: Any object rolls when there is no friction. So, Sliding to Rolling is correct.

Q: Only For Geniuses Solve this MathPuzzle if you can? 1242 0

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Answer :
Explanation :

Let the required number be 'X' Condition 1 :   XX = 2X  => 2X2 = X => X = 12   Condition 2 : X × X = X2=> X = 12   Therefore, 12 is the number which becomes double when it is divided by itself and becomes half when it is multiplied by itself.

Q: What could cause a Fixed Disk Error? 2092 0

  • 1
    Slow Processor Speed
    Correct
    Wrong
  • 2
    RAM Space
    Correct
    Wrong
  • 3
    Incorrect CMOS Settings
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 3. "Incorrect CMOS Settings"
Explanation :

Answer: C) Incorrect CMOS Settings Explanation:

Q: Thread is to String as Cask is to 4247 0

  • 1
    Barrel
    Correct
    Wrong
  • 2
    Disc
    Correct
    Wrong
  • 3
    Wallet
    Correct
    Wrong
  • 4
    Box
    Correct
    Wrong
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Answer : 1. "Barrel"
Explanation :

Answer: A) Barrel Explanation: Here Thread and String are Synonyms of each other. Then the answer will be the synonym of Cask.  Cask is nothing but a large barrel-like container used for storing liquids, typically alcoholic drinks.  Ex : Drum, Vessel, Tank, Barrel, Hogshead, Firkin,...   Here from the options Barrel is the only synonym of Cask.   Thus,  Thread : String :: Cask : Barrel

Q: Organisms need Nutrients in order to 1640 0

  • 1
    Breaking down food
    Correct
    Wrong
  • 2
    Utilize chemical compounds
    Correct
    Wrong
  • 3
    recycling
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 1. "Breaking down food"
Explanation :

Answer: A) Breaking down food Explanation: Nutrients are necessary for break down the food and supply energy to the organisms and to carry out essential life functions. Important nutrients are Hydrogen, Carbon and Oxygen.   Some more important nutrients for plants are : Potassium, Sulphur, Nitrogen, Phosphorous, Calcium and Magnesium.

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