GATE Practice Question and Answer

Q: Assuming the given statements to be true, find which of the two conclusions A and B given below is/are definitely true. Statements: C < T < L= P > Q,  N > C > Y Conclusions:   A. P > Y       B. Y < P 1607 0

  • 1
    only conclusion B is true.
    Correct
    Wrong
  • 2
    only conclusion A is true.
    Correct
    Wrong
  • 3
    neither conclusion I nor II is true.
    Correct
    Wrong
  • 4
    either conclusion I or II is true.
    Correct
    Wrong
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Answer : 1. "only conclusion B is true."
Explanation :

Answer: A) only conclusion B is true. Explanation: From given statements, we can conclude that N > C < T < L= P > Q  .....(1) Here given that C > Y but in eq(1) we got that C < T < T <= P => Y is definitely less than P. So only conclusion B is True.

Q: The length of a brigade which a train 130 m long and traveling at 45kmph can cross in 30 seconds, is 1607 0

  • 1
    196 mts
    Correct
    Wrong
  • 2
    220 mts
    Correct
    Wrong
  • 3
    230 mts
    Correct
    Wrong
  • 4
    245 mts
    Correct
    Wrong
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Answer : 4. "245 mts"
Explanation :

Answer: D) 245 mts Explanation: Let the length of the brigade is x mtsThen Distance = 130 + x mtsgiven speed = 45 kmph = 45 x5/18 m/sTime = 30 secT = D/S => 30 = 130+x/(45x5/18)=> x = 245 mts.

Q: Who is the 45th President of United States ? 1607 0

  • 1
    Hillary Clinton
    Correct
    Wrong
  • 2
    Barack Obama
    Correct
    Wrong
  • 3
    George W. Bush
    Correct
    Wrong
  • 4
    Donald Trump
    Correct
    Wrong
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Answer : 4. "Donald Trump"
Explanation :

Answer: D) Donald Trump Explanation: Donald John Trump (born June 14, 1946) is an American businessman, television personality, politician, and the 45th President of the United States.

Q: Question : What is the sum which earned interest ? Statements : a. The total simple interest was Rs. 9000 after 9 years.b. The total of sum and simple interest was double of the sum after 6 years. 1607 0

  • 1
    Only a is sufficient
    Correct
    Wrong
  • 2
    Neither a nor b is sufficient
    Correct
    Wrong
  • 3
    Only b is sufficient
    Correct
    Wrong
  • 4
    Both a and b sufficient
    Correct
    Wrong
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Answer : 4. "Both a and b sufficient"
Explanation :

Answer: D) Both a and b sufficient Explanation: Let the sum be Rs. x a. gives, S.I = Rs. 9000 and time = 9 years. b. gives, Sum + S.I for 6 years = 2 x Sum --> Sum = S.I for 6 years. Now, S.I for 9 years = Rs. 9000 S.I for 1 year = Rs. 9000/9 = Rs. 1000. S.I for 6 years = Rs. (1000 x 6)= Rs. 6000. --> x = Rs. 6000 Thus, both a and b are necessary to answer the question.

Q: 3, 12, 5, ? 1607 0

  • 1
    36
    Correct
    Wrong
  • 2
    26
    Correct
    Wrong
  • 3
    30
    Correct
    Wrong
  • 4
    24
    Correct
    Wrong
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Answer : 3. "30"
Explanation :

Answer: C) 30 Explanation: 332 + 3 = 12552 + 5 = 30

Q: If the first and third letters in the word NECESSARY were interchanged, also the fourth and the sixth letters, and the seventh and the ninth letters, which of the follwing would be the seventh letter from the left ? 1606 0

  • 1
    E
    Correct
    Wrong
  • 2
    S
    Correct
    Wrong
  • 3
    R
    Correct
    Wrong
  • 4
    Y
    Correct
    Wrong
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Answer : 4. "Y"
Explanation :

Answer: D) Y Explanation: we interchange the positions of the letters as shown below:                                    The new letter sequence is CENSSEYRA.Clearly, the seventh letter from the left is Y.

Q: India’s longest bridge “Dhola-Sadia Bridge” has built over which tributary of the Brahmaputra River ? 1605 0

  • 1
    Kameng River
    Correct
    Wrong
  • 2
    Lohit River
    Correct
    Wrong
  • 3
    Subansiri River
    Correct
    Wrong
  • 4
    Manas River
    Correct
    Wrong
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Answer : 2. "Lohit River"
Explanation :

Answer: B) Lohit River Explanation: The Prime Minister Narendra Modi has inaugurated India’s longest bridge “Dhola-Sadia Bridge” in Assam on May 26, 2017. This three lane, 9.15 kilometre bridge has been built over river Lohit, a tributary of the Brahmaputra river. It links Dhola in Assam to Sadia. The bridge will reduce the distance from Rupai on NH- 37 in Assam to Meka-Roing on NH-52 in Arunachal Pradesh by 165 KM. The travel time between the two places will come down from the current six hours to just one hour, a total five hour reduction. This will result in saving of petrol and diesel worth Rs 10 Lakh per day. It will also cater to the strategic requirements of the country in the border areas of Arunachal Pradesh, besides facilitating numerous hydro power projects coming up in the state.

Q: In how many ways can letter of the word RAILINGS arrange so that R and S always come together? 1605 0

  • 1
    1260
    Correct
    Wrong
  • 2
    2520
    Correct
    Wrong
  • 3
    5040
    Correct
    Wrong
  • 4
    1080
    Correct
    Wrong
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Answer : 3. "5040"
Explanation :

Answer: C) 5040 Explanation: The number of ways in which the letters of the word RAILINGS can be arranged such that R & S always come together is   Count R & S as only 1 space or letter so that RS or SR can be arranged => 7! x 2!   But in the word RAILINGS, I repeated for 2 times => 7! x 2!/2! = 7! ways = 5040 ways.

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