GATE Practice Question and Answer

Q: 5x - 6 = 3x - 8 Solve the above equation. 1708 0

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

Answer: B) -1 Explanation: Given 5x - 6 = 3x - 8 5x - 3x = -8 + 6 2x = -2 => x = -1.

Q: Describe a time when you made a mistake ? 1708 0

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Answer :
Explanation :

Mention the mistake and be honest about it, but always make sure that you follow it up with what you learnt from that episode and the improvements it has brought to your efficiency.

Q: In a competitive examination, the average marks for the entire examination was 60 marks. If 20% of the applicants scored 85 marks and 25% scored 95 marks. What was the average marks of the remaining applicants in the examination ? 1708 0

  • 1
    60
    Correct
    Wrong
  • 2
    52
    Correct
    Wrong
  • 3
    45
    Correct
    Wrong
  • 4
    35
    Correct
    Wrong
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Answer : 4. "35"
Explanation :

Answer: D) 35 Explanation: Let the total applicants be 100   Then, 20% got 85 marks i.e 20 x 85 = 1700   and 25% got 95 marks  i.e 25 x 95 = 2375   Now, the remaining applicants are 55 and let the average marks scored by them be x.   Therefore, 2375 + 1700 + 55x  =  60×100  6000 - 4075 = 55x 55x=1925 x=35.

Q: International Day of Happiness is celebrated throughout the world on  ? 1708 0

  • 1
    21st March
    Correct
    Wrong
  • 2
    23rd March
    Correct
    Wrong
  • 3
    20th March
    Correct
    Wrong
  • 4
    19th March
    Correct
    Wrong
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Answer : 3. "20th March"
Explanation :

Answer: C) 20th March Explanation: The International Day of Happiness (known as Happiness Day) is celebrated throughout the world on the 20th of March. The International Day of Happiness was founded on June 28, 2012, by the United Nations General Assembly when all 193 member states unanimously adopted UN resolution 66/281. It was celebrated for the first time in 2013.

Q: If 25% of a number is subtracted from a second number, the second number reduces to its four-sixth. What is the ratio of the first number to the second number  ? 1707 0

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

Answer: A) 4:3 Explanation: Let the numbers be p & q q-p/4 = 4q/6 => q-4q/6 = p/4 => 2q/6 = p/4  => p/q = 4/3

Q: Which elements are most abundant in living organisms? 1707 0

  • 1
    oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorus
    Correct
    Wrong
  • 2
    carbon, potassium, iron, magnesium, hydrogen, and nitrogen
    Correct
    Wrong
  • 3
    hydrogen, carbon, calcium, potassium, oxygen, and phosphorus
    Correct
    Wrong
  • 4
    oxygen, calcium, phosphorus, sodium, hydrogen, and carbon
    Correct
    Wrong
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Answer : 1. "oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorus"
Explanation :

Answer: A) oxygen, nitrogen, carbon, hydrogen, sulfur, and phosphorus Explanation: Living organisms often contain trace amounts of several elements, but the most abundant ones are oxygen, carbon, hydrogen, nitrogen, calcium, sulphur and phosphorus.

Q: The sum of the digits of a two-digit number is 12. The difference of the digits is 6. Find the number ? 1705 0

  • 1
    57
    Correct
    Wrong
  • 2
    75
    Correct
    Wrong
  • 3
    48
    Correct
    Wrong
  • 4
    39
    Correct
    Wrong
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Answer : 4. "39"
Explanation :

Answer: D) 39 Explanation: Let the two-digit number be 10a + ba + b = 12 --- (1)If a>b, a - b = 6If b>a, b - a = 6If a - b = 6, adding it to equation (1), we get2a = 18 => a =9so b = 12 - a = 3Number would be 93.if b - a = 6, adding it to the equation (1), we get2b = 18 => b = 9a = 12 - b = 3.Number would be 39.There fore, Number would be 39 or 93.

Q: Choose the missing terms in the given series from the four alternatives given below. GMQ, JOT, MQW, ? 1704 0

  • 1
    PTZ
    Correct
    Wrong
  • 2
    ORY
    Correct
    Wrong
  • 3
    VXY
    Correct
    Wrong
  • 4
    PSZ
    Correct
    Wrong
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Answer : 4. "PSZ"
Explanation :

Answer: D) PSZ Explanation: The first letter moves three steps forward. The second letter moves two steps forward. The third letter moves three steps forward.

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