GATE Practice Question and Answer

Q: What least number must be substracted from 627349 so that the remaining number is divisible by 15 ? 1846 0

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

Answer: D) 4 Explanation: On dividing 627349 by 15, we get remainder = 4.Therefore, the obtained remainder is the least number to be subtracted from the given number so that the the mnumber is divisible by 15.Here 4 is the least number to be subtracted from 627349 so that it is divisible by 15.

Q: A farmer divides his herd of k cows among his 4 sons, so that one son gets one half of the herd, the second gets one-fourth, the third gets one-fifth and the fourth gets 9 cows. Then k is equal to ? 1846 0

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    160
    Correct
    Wrong
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    120
    Correct
    Wrong
  • 3
    140
    Correct
    Wrong
  • 4
    180
    Correct
    Wrong
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Answer : 4. "180"
Explanation :

Answer: D) 180 Explanation: Given total number of cows = kNow, 1st son share = k/22nd son share = k/43rd son share = k/54th son share = 9 (k) + (k/4) + (k/5) + 9 = k=> k - (19k/20) = 9=> (20k-19k)/20 = 9=> k = 180.

Q: An alloy of copper and bronze weight 50g. It contains 80% Copper. How much copper should be added to the alloy so that percentage of copper is increased to 90%? 1844 0

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    45 gm
    Correct
    Wrong
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    50 gm
    Correct
    Wrong
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    55 gm
    Correct
    Wrong
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    60 gm
    Correct
    Wrong
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Answer : 2. "50 gm"
Explanation :

Answer: B) 50 gm Explanation: Initial quantity of copper =80100 x 50 = 40 g  And that of Bronze = 50 - 40 = 10 g Let 'p' gm of copper is added to the mixture => 50 + p x 90100 = 40 + p => 45 + 0.9p = 40 + p => p = 50 g Hence, 50 gms of copper is added to the mixture, so that the copper is increased to 90%.

Q: 3, 12, 5, ? 1844 0

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

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

Q: Antonym of:: Amicable 1843 0

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    Hostile
    Correct
    Wrong
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    Loveable
    Correct
    Wrong
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    Friendly
    Correct
    Wrong
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    Peaceful
    Correct
    Wrong
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Answer : 1. "Hostile"
Explanation :

Answer: A) Hostile Explanation: Amicable means Friendly or in Loveable, peaceful sense. Then Antonyms for Amicable are Opposite of Friendly => Unfriendly, Hostile, Unpeaceful, etc...

Q: Pointing to a photograph, a woman says, "This man's son's sister is my mother-in-law." How is the woman's husband related to the man in the photograph ? 1842 0

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    son
    Correct
    Wrong
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    nephew
    Correct
    Wrong
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    grandson
    Correct
    Wrong
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    son-in-law
    Correct
    Wrong
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Answer : 3. "grandson"
Explanation :

Answer: C) grandson Explanation: Man's son's sister---Man's daughter.So, the man's daughter is the mother of the woman's husband. Thus, the woman's husband is the grandson of the man in the photograph.

Q: If  1 1 1 1 = R    2 2 2 2 = T    3 3 3 3 = E    4 4 4 4 = N   Then  5 5 5 5 = ? 1841 0

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    Y
    Correct
    Wrong
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    Z
    Correct
    Wrong
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    T
    Correct
    Wrong
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    X
    Correct
    Wrong
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Answer : 1. "Y"
Explanation :

Answer: A) Y Explanation: If you add all the terms of the LHS of equality, then the last letter of the sum written in words would give you the RHS. 1 + 1 + 1 + 1 = 4 = FOUR 2 + 2 + 2 + 2 = 8 = EIGHT 3 + 3 + 3 + 3 = 12 = TWELVE 4 + 4 + 4 + 4 = 16 = SIXTEEN   So, following the same pattern. 5 + 5 + 5 + 5 = 20 = TWENTY   That gives us our answer to 5 5 5 5 =  "Y".

Q: A container contains 120 lit of Diesel. From this container, 12 lit of Diesel was taken out and replaced by kerosene. This process was further repeated for two times. How much diesel is now there in the container ? 1838 0

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    88.01 lit
    Correct
    Wrong
  • 2
    87.48 lit
    Correct
    Wrong
  • 3
    87.51 lit
    Correct
    Wrong
  • 4
    87.62 lit
    Correct
    Wrong
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Answer : 2. "87.48 lit"
Explanation :

Answer: B) 87.48 lit Explanation: For these type of problems, Quantity of Diesel remained = q1-pqn      Here p = 12 , q = 120    => 1201-121203 = 120 x 0.9 x 0.9 x 0.9 = 87.48 lit.

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