GATE Practice Question and Answer

Q: I have a face but no eyes Puzzle 1457 0

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Answer :
Explanation :

A Clock has a face, but no eyes. It has 3 hands i.e, hours, minutes and seconds hands but no arms.

Q: What is another name for the governor of a state? 1455 0

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    Chief Executive
    Correct
    Wrong
  • 2
    Attorney General
    Correct
    Wrong
  • 3
    Secretary of the State
    Correct
    Wrong
  • 4
    Vice Pesident
    Correct
    Wrong
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Answer : 1. "Chief Executive"
Explanation :

Answer: A) Chief Executive Explanation: Another name for the governor of the state is Chief Executive of the state. And we also know that, The attorney general is the head of the US Department of Justice, The vice president is just under the president of the US and The secretary of state is the head of the US Department of State.

Q: Give the common name for the following compound CH32CH CH2 - Br 1454 0

  • 1
    Isobutyl bromide
    Correct
    Wrong
  • 2
    Methyl bromide
    Correct
    Wrong
  • 3
    Propyl bromide
    Correct
    Wrong
  • 4
    Butyl bromide
    Correct
    Wrong
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Answer : 1. "Isobutyl bromide"
Explanation :

Answer: A) Isobutyl bromide Explanation:

Q: Which of the following is known as the Electronic City of India? 1454 0

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    Hyderabad
    Correct
    Wrong
  • 2
    Mumbai
    Correct
    Wrong
  • 3
    Bengaluru
    Correct
    Wrong
  • 4
    Gurgaon
    Correct
    Wrong
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Answer : 3. "Bengaluru"
Explanation :

Answer: C) Bengaluru Explanation: Bengaluru city is known as the Electronic City of India. Because Electronic City is an IT hub in Anekal taluk of Bengaluru, Karnataka, India. It is one of India's largest electronic industrial parks in 3 phases i.e, in Konappana Agrahara and Doddathogur villages, Bengaluru.

Q: On the occasion of New Year, each student of a class sends greeting cards to the others. If there are 21 students in the class, what is the total number of greeting cards exchanged by the students? 1453 0

  • 1
    380
    Correct
    Wrong
  • 2
    420
    Correct
    Wrong
  • 3
    441
    Correct
    Wrong
  • 4
    400
    Correct
    Wrong
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Answer : 2. "420"
Explanation :

Answer: B) 420 Explanation: Given total number of students in the class = 21   So each student will have 20 greeting cards to be send or receive (21 - 1(himself))   Therefore, the total number of greeting cards exchanged by the students = 20 x 21 = 420.

Q: What is 15 as a decimal? 1450 0

  • 1
    0.333
    Correct
    Wrong
  • 2
    0.666
    Correct
    Wrong
  • 3
    0.200
    Correct
    Wrong
  • 4
    0.452
    Correct
    Wrong
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Answer : 3. "0.200"
Explanation :

Answer: C) 0.200 Explanation: Here I converted the original fraction to a fraction with the denominator being 10, because decimals can be written in the tenths place. Divide numerator and denominator with '2'15 x 22 = 210 = 0.2

Q: The sum of the two digits of a number is 8. If the number is subtracted from the number obtained by reversing its digits, the result is 54. Find the number ? 1450 0

  • 1
    28
    Correct
    Wrong
  • 2
    19
    Correct
    Wrong
  • 3
    37
    Correct
    Wrong
  • 4
    17
    Correct
    Wrong
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Answer : 4. "17"
Explanation :

Answer: D) 17 Explanation: Any two digit number can be written as (10P + Q), where P is the digit in the tens place and Q is the digit in the units place.P + Q = 8 ----- (1)(10Q + P) - (10P + Q) = 549(Q - P) = 54(Q - P) = 6 ----- (2)Solve (1) and (2) P = 1 and Q = 7The required number is = 17

Q: If x and y are the two digits of the number 653xy such that this number is divisible by 80, then x+y is equal to  ? 1449 0

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

Answer: D) 2 Explanation: Since 653xy is divisible by 5 as well as 2, so y = 0.Now, 653x0 must be divisible by 8.So, 3x0 must be divisible by 8. This happens when x = 2x + y = (2 + 0) = 2.

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