GATE Practice Question and Answer

Q: Assertion( 2300 0

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    : Most of the Himalayan rivers are perennial.Reason(R) : They are fed by melting snow. A) R correctly explains A
    Correct
    Wrong
  • 2
    R is true but A is fale
    Correct
    Wrong
  • 3
    A is true but R is false
    Correct
    Wrong
  • 4
    A) R correctly explains A B) R is true but A is fale C) A is true but R is false D)
    Correct
    Wrong
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Answer : 1. ": Most of the Himalayan rivers are perennial.Reason(R) : They are fed by melting snow. A) R correctly explains A"
Explanation :

Answer: A) R correctly explains A Explanation: Most Himalayan rivers are perennial because they are fed by the melting snow throughout the year.Thus, both A and R are true & R correctly explains A.

Q: A person got Rs.48 more when he invested a certain sum at compound interest instead of simple interest for two years at 8% p.a. Find the sum  ? 2298 0

  • 1
    Rs.8000
    Correct
    Wrong
  • 2
    Rs.6500
    Correct
    Wrong
  • 3
    Rs.7500
    Correct
    Wrong
  • 4
    Rs.5000
    Correct
    Wrong
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Answer : 3. "Rs.7500"
Explanation :

Answer: C) Rs.7500 Explanation: p=d×1002R2  Where d is difference, r is rate of interest.  => (48 x 100 x 100) / 8 x 8 = Rs.7500

Q: If Reena’s age was twice of her present age, when subtracted from four times three years from hence, with three times the three years before her present age. What will be her age after one year ? 2295 0

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    22 yrs
    Correct
    Wrong
  • 2
    21 yrs
    Correct
    Wrong
  • 3
    20 yrs
    Correct
    Wrong
  • 4
    24 yrs
    Correct
    Wrong
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Answer : 1. "22 yrs"
Explanation :

Answer: A) 22 yrs Explanation: Let Reena’s present age be 'K' yrs.Given:{(K+3) x 4} - {(K-3) x 3)} => K = 21 yrsSo her present age is 21 yrs.Then, her age after 1 year is 22 yrs.

Q: Ronika deposited Rs.7000 which amounted to Rs.9200 after 3 years at simple interest. Had the interest been 2% more. She would get how much ? 2295 0

  • 1
    9850
    Correct
    Wrong
  • 2
    9500
    Correct
    Wrong
  • 3
    9620
    Correct
    Wrong
  • 4
    9760
    Correct
    Wrong
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Answer : 3. "9620"
Explanation :

Answer: C) 9620 Explanation: As the interest rate increases by 2%=> (7000x3x2)/100 = 420                                   9200                                  --------                                   9620

Q: Oar is to rowboat as foot is to 2292 0

  • 1
    Walk
    Correct
    Wrong
  • 2
    Loafers
    Correct
    Wrong
  • 3
    Skateboard
    Correct
    Wrong
  • 4
    Running
    Correct
    Wrong
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Answer : 3. "Skateboard"
Explanation :

Answer: C) Skateboard Explanation: A rowboat can be put into motion by using oar. Similaarly, a skateboard can be put into motion by using foot. The other options like walk and running are not objects to be in motion. And loafers are something worn on foot.   Hence, Oar : Rowboat :: Foot : Skateboard.

Q: Find the Odd One Out? 3 24 186 1008 5040 20160 2292 0

  • 1
    24
    Correct
    Wrong
  • 2
    20160
    Correct
    Wrong
  • 3
    186
    Correct
    Wrong
  • 4
    5040
    Correct
    Wrong
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Answer : 3. "186"
Explanation :

Answer: C) 186 Explanation: The given number series is 3  24  186  1008  5040  20160 Here  the given series follows a pattern that, 3 3 x 8 = 24 24 x 7 = 168 not 186 168 x 6 = 1008 1008 x 5 =  5040 5040 x 4 = 20160   Hence the Odd One in the number series is 186.

Q: The first 8 alphabets are written down at random. what is the probability that the letters b,c,d,e always come together ? 2291 0

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    1/7
    Correct
    Wrong
  • 2
    8!
    Correct
    Wrong
  • 3
    7!
    Correct
    Wrong
  • 4
    1/14
    Correct
    Wrong
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Answer : 4. "1/14"
Explanation :

Answer: D) 1/14 Explanation: The 8 letters can be written in 8! ways.n(S) = 8!Let E be the event that the letters b,c,d,e always come together when the first 8 alphabets are written down.Now the letters a, (bcde), f, g and h can be arranged in 5! ways.The letters b,c,d and e can be arranged themselves in 4! ways.n(E) = 5! x 4!Now, the required P(E) = n(E)/n(S) = 5! x 4!/8! = 1/14Hence the answer is 1/14.

Q: Tractor : Trailer :: Horse : ? 2290 0

  • 1
    Saddle
    Correct
    Wrong
  • 2
    Engine
    Correct
    Wrong
  • 3
    Cart
    Correct
    Wrong
  • 4
    Stable
    Correct
    Wrong
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Answer : 3. "Cart"
Explanation :

Answer: C) Cart Explanation: Here the given words are related in such a way that, Trailer is pulled by Tractor and similarly, Cart is pulled by Horse.   Hence, Tractor : Trailer :: Horse : Cart.

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