GATE Practice Question and Answer

Q: A man walks 6 km at a speed of 112kmph, runs 8 km at a speed of 2 kmph and goes by bus another 32 km. Speed of the bus is 8 kmph. Find the average speed of the man in kmph. 1794 0

  • 1
    4314
    Correct
    Wrong
  • 2
    4213
    Correct
    Wrong
  • 3
    2413
    Correct
    Wrong
  • 4
    3414
    Correct
    Wrong
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Answer : 2. "4213"
Explanation :

Answer: B) Option B Explanation: Man walked 6 km at 1.5 kmph, again he walked 8 km at speed of 2 kmph and 40 km at a speed of 8kmphtime taken indivisually: => 6/1.5 = 4 m=> 8/2 = 4 m=> 40/8 = 5 m   Average speed of man= total distance/ total time=> 54/13 = 4213 kmph

Q: If a student walks at the rate of 4 mts/min from his home, he is 4 minutes late for school, if he walks at the rate of 6 mts/min he reaches half an hour earlier. How far is his school from his home ? 1511 0

  • 1
    100 mts
    Correct
    Wrong
  • 2
    96 mts
    Correct
    Wrong
  • 3
    98 mts
    Correct
    Wrong
  • 4
    120 mts
    Correct
    Wrong
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Answer : 3. "98 mts"
Explanation :

Answer: C) 98 mts Explanation: Let the distance between home and school is 'x'.Let actual time to reach be 't'.Thus, x/4 = t + 4 ---- (1)and x/6 = t - 30 -----(2)Solving equation (1) and (2)=> x = 98 mts.

Q: Two trains running in opposite directions cross a pole placed on the platform in 47 seconds and 31 seconds respectively. If they cross each other in 33 seconds, what is the ratio of their speeds? 842 0

  • 1
    1:7
    Correct
    Wrong
  • 2
    7:1
    Correct
    Wrong
  • 3
    2:3
    Correct
    Wrong
  • 4
    3:2
    Correct
    Wrong
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Answer : 1. "1:7"
Explanation :

Answer: A) 1:7 Explanation: Let the speed of the trains be x and y respectively length of train1 = 47xlength of train2 = 31yRelative speed= x + yTime taken to cross each other = 33 s=> 47x+31yx+y= 33=> (47x + 31 y) = 33(x + y)=> 14x = 2y=> x/y = 2/14 = 1/7  = 1:7

Q: Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5 ? 1129 0

  • 1
    2/3
    Correct
    Wrong
  • 2
    1/2
    Correct
    Wrong
  • 3
    7/8
    Correct
    Wrong
  • 4
    4/5
    Correct
    Wrong
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Answer : 2. "1/2"
Explanation :

Answer: B) 1/2 Explanation: Multiples of 3 below 20 are 3, 6, 9, 12, 15, 18 Multiples of 5 below 20 are 5, 10, 15, 20 Required number of possibilities = 10Total number of possibilities = 20Required probability = 10/20 = 1/2.

Q: Three unbiased coins are tossed. What is the probability of getting at most two heads ? 1259 0

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

Answer: D) 3/4 Explanation: Let S be the sample space.Here n(S)= 23 = 8Let E be the event of getting atmost two heads. Then,n(E) = {(H,T,T), (T,H,T), (T,T,H), (H,H,T), (T,H,H), (H,T,H)}Required probability = n(E)/n(S) = 6/8 = 3/4.

Q: Which of the following is / are fund managers for National Pension System (NPS) in 2017 ? 1324 0

  • 1
    Axis provident fund
    Correct
    Wrong
  • 2
    Yes bank pension fund
    Correct
    Wrong
  • 3
    ICICI prudential pension
    Correct
    Wrong
  • 4
    Punjab National provident fund
    Correct
    Wrong
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Answer : 3. "ICICI prudential pension"
Explanation :

Answer: C) ICICI prudential pension Explanation: At present in 2017, there are only seven NPS fund managers viz. HDFC Pension Fund, ICICI Prudential Pension, Kotak Pension Fund, LIC Pension Fund,  Reliance Capital Pension, SBI Pension Fund and UTI Retirement Solutions.

Q: Shares of a company given in exchange for work done are called ? 806 0

  • 1
    Secondary shares
    Correct
    Wrong
  • 2
    Hot equity
    Correct
    Wrong
  • 3
    Preferential shares
    Correct
    Wrong
  • 4
    Sweat equity shares
    Correct
    Wrong
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Answer : 4. "Sweat equity shares"
Explanation :

Answer: D) Sweat equity shares Explanation: A sweat equity share is an equity share issued by the company to employees or directors at a discount or for consideration other than cash for providing know-how or making available rights in the nature of intellectual property rights or value additions.

Q: If a2+b2 = c2 , then 1logc+ab + 1logc-ab = ? 2334 1

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

Answer: B) 2 Explanation: Given a2 + b2 = c2   Now  1logc+ab  + 1logc-ab    = logbc+a + logbc-a   = logbc2-a2 = 2logbb = 2

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