GATE Practice Question and Answer

Q: What are the Multiples of 18? 1280 0

  • 1
    144
    Correct
    Wrong
  • 2
    72
    Correct
    Wrong
  • 3
    306
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: The┬аMultiples┬аof┬а18 are 18, 36, 54, 72, 90, 108, 126, .... ┬а Multiples┬аof┬а18 are nothing but numbers which are divisible by 18 leaving remainder 0. ┬а An infinite number of┬аmultiples of 18┬аcan be achieved by adding 18 to each subsequent multiple.

Q: A contractor undertake to finish a certain work in 124 days and employed 120 men. After 64 days, he found that he had already done 2/3 of the work. How many men can be discharged so that the work may finish in time ? 1277 0

  • 1
    64
    Correct
    Wrong
  • 2
    62
    Correct
    Wrong
  • 3
    58
    Correct
    Wrong
  • 4
    56
    Correct
    Wrong
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Answer : 4. "56"
Explanation :

Answer: D) 56 Explanation: Days remaining 124 тАУ 64 = 60 days Remaining work = 1 - 2/3 = 1/3 Let men required men for working remaining days be 'm' So men required = (120 x 64)/2 = (m x 60)/1 => m = 64 Men discharge = 120 тАУ 64 = 56 men.

Q: The difference of two numbers is 1365. On dividing the larger number by the smaller, we get 6 as quotient and 15 as remainder. What is the smaller number ┬а? 1277 0

  • 1
    270
    Correct
    Wrong
  • 2
    1270
    Correct
    Wrong
  • 3
    350
    Correct
    Wrong
  • 4
    720
    Correct
    Wrong
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Answer : 1. "270"
Explanation :

Answer: A) 270 Explanation: Let the smallest number be x.Then larger number = (x + 1365)x + 1365 = 6x + 15= 5x = 1350 x = 270Smaller number = 270.

Q: How long would it take to travel 4 light years? 1277 0

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Answer :
Explanation :

There are approximately 6 trillion miles in a light-year, so the distance we need to go is 6 trillion miles / light-year times. 4 light-years is equal to 24 trillion miles. So, this whole would take 1.2 billion hours. There are 24 hours a day and 365.25 days per year, so this time in years is 137 thousand years.

Q: 3/4 divided by 2 is 1275 0

  • 1
    3/2
    Correct
    Wrong
  • 2
    2/3
    Correct
    Wrong
  • 3
    8/3
    Correct
    Wrong
  • 4
    3/8
    Correct
    Wrong
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Answer : 4. "3/8"
Explanation :

Answer: D) 3/8 Explanation: 3/4 divided by 2 = 3/4/2 = 3/4x2 = 3/8. ┬а Hence,┬а3/4 divided by 2 is equal to 3/8.

Q: The price of 2 oranges, 3 bananas and 4 apples is Rs. 15. The price of 3 oranges, 2 bananas and 1 apple is Rs. 10. What will be price of 4 oranges, 4 bananas and 4 apples ┬а? 1275 0

  • 1
    Rs. 10
    Correct
    Wrong
  • 2
    Rs. 15
    Correct
    Wrong
  • 3
    Rs. 20
    Correct
    Wrong
  • 4
    Rs. 25
    Correct
    Wrong
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Answer : 3. "Rs. 20"
Explanation :

Answer: C) Rs. 20 Explanation: Let the Oranges be 'O', Bananas be 'B' and Apples be 'A' From the given data, ┬а 2O + 3B + 4A = 15 ...... (I) 3O + 2B + A = 10 ..... (II) On adding (I) and (II), 5O + 5B + 5A = 25 O + B + A = 5 4O + 4B + 4A = 20.

Q: Which compound contains ionic bonds? 1275 0

  • 1
    CaO
    Correct
    Wrong
  • 2
    CO2
    Correct
    Wrong
  • 3
    NO2
    Correct
    Wrong
  • 4
    NO
    Correct
    Wrong
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Answer : 1. "CaO"
Explanation :

Answer: A) CaO Explanation: An ionic bond is a chemical bond between two atoms in which one atom seems to donate its electron to another atom. ┬а Here in the given compounds, the compound that contains ionic bond is CaO, Calcium oxide.

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Answer : 1. "5"
Explanation :

Answer: A) 5 Explanation: The following arrangements satisfy all 3 conditions. Arrangement 1: 3 books in a row; 12 rows. Arrangement 2: 4 books in a row; 9 rows.Arrangement 3: 6 books in a row; 6 rows.Arrangement 4: 9 books in a row; 4 rows.Arrangement 5: 12 books in a row; 3 rows. ┬а Therefore, the possible arrangements are 5.

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