GATE प्रश्न और उत्तर का अभ्यास करें

प्र: If [P @ Q] means [P is wife of Q], [P+Q] means [P is father of Q] and [P - Q] means [P is sister of Q] then in [G+ H - R @ D], how is G related to D ? 1745 0

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    Son-in-law
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    गलत
  • 2
    Grand father
    सही
    गलत
  • 3
    Father-in-law
    सही
    गलत
  • 4
    Brother
    सही
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उत्तर : 3. "Father-in-law"
व्याख्या :

Answer: C) Father-in-law Explanation: "G is father in law of D"G+H means G is father of HH is either son or daughter of GH-R means H is sister of RR@D means R is wife of Dso H and R are sistersand daughters of Gso husband of R i.e. D is son in law of Gor G is father in law of D

प्र: In a class there are certain no. of boys and girls. If 15 girls are absent then no. of boys will be twice that of girls. If 45 boys are absent then girls strength will be 5 times that of boys. Find number of boys actually present ? 2026 0

  • 1
    40
    सही
    गलत
  • 2
    50
    सही
    गलत
  • 3
    55
    सही
    गलत
  • 4
    35
    सही
    गलत
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उत्तर : 2. "50"
व्याख्या :

Answer: B) 50 Explanation: 15 girls are absent => b = 2(g-15)...... eqn...(1) 45 boys are absent => g - 15 = 5(b-45).....eqn...(2) => g = 5(b-45) + 15 => b = 2((5(b-45)+15)-15) => b = 2(5b - 225 + 15 - 15) => b = 2(5b-225) => b = 10b - 450 => 9b = 450 => b = 50 so from equation(2) g - 15 = 5(b - 45) => g - 15 = 5(50-45) => g - 15 = 5(5) => g = 25 + 15 => g = 40 Therefore, the number of boys = 50 and girls = 40

प्र: A person says that his son is 5 times as old as his daughter and his wife is 5 times older than his son and he is twice the age of his wife . The sum total of all the ages equals the age of the grand mother who celebrated her 81st birthday today. How old was his son? 2186 0

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    50 yrs
    सही
    गलत
  • 2
    25 yrs
    सही
    गलत
  • 3
    72 yrs
    सही
    गलत
  • 4
    40 yrs
    सही
    गलत
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उत्तर : 1. "50 yrs"
व्याख्या :

Answer: A) 50 yrs Explanation: Let the daughter age be 'x'Therefore, Son age = 5x, Mother age = 25x, Person age = 50x. Thus we get, x+5x+25x+50x = 8181x = 81x = 1 Daughter's age = 1, Son's = 5, Mother's = 25, Person's age = 50.

प्र: There is a 3 digited number. 3rd digit is the square root of the 1st digit. 2nd digit is the sum of 1st and 3rd. And that number is divisible by 2,3,6,7. What is that number? 1107 0

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    121
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  • 2
    943
    सही
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  • 3
    462
    सही
    गलत
  • 4
    None
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उत्तर : 3. "462"
व्याख्या :

Answer: C) 462 Explanation: Assume that the number is taken as XYZ.Condition 1 => Z = sq.root(x) => Possible digits of X is 1,4,9Condition 2 => Y = X + ZX Y Z1 2 14 6 29 12 3 => (wrong because it is 4 digit.) and 121 is not divisible by 2 The answer is 462.

प्र: At what time will B catch up with A, if A starts from a place at 11.00 A.M. and travels at a speed of 3.5 kmph, B starts at 1.00 P.M. and travels with speeds of 1 kmph for 1 hour, 2 kmph for the next 1 hour, 3 kmph for the next 1 hour and so on. 2686 0

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    8 : 47 pm
    सही
    गलत
  • 2
    6 : 40 pm
    सही
    गलत
  • 3
    8 : 42 pm
    सही
    गलत
  • 4
    7 : 40 pm
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उत्तर : 4. "7 : 40 pm"
व्याख्या :

Answer: D) 7 : 40 pm Explanation: At 1 pm ... Distance between A and B = 2x3.5 = 7 kmsat 2 pm .....Distance between A and B = 7 + 3.5 - 1 = 9.5 kmsAt 3 pm ....Distance between A and B = 9.5 + 3.5 - 2 = 11 kms.......At 7 pm distance between A and B = 3 kms.From 7 pm to 8 pm, speed of A = 3.5 kmphspeed of B = 8 kmphRelative speed = 4.5 kmph Time taken by B to meet A = 3/4.5 hrs = 30/45 hrs = 120/3 mins = 40 mins. So meeting time is 7 : 40 PM.

प्र: There is sufficient salary to give K for 10 days and L for 15 days. Then how many days will the money last if both has to be given the salary ? 1919 0

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    6 days
    सही
    गलत
  • 2
    12 days
    सही
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  • 3
    4 days
    सही
    गलत
  • 4
    9 days
    सही
    गलत
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उत्तर : 1. "6 days"
व्याख्या :

Answer: A) 6 days Explanation: K's 1 day's salary = 1/10 L's 1 day's salary = 1/15 Together their 1 day's salary = 1/10 + 1/15 = 3/30 + 2/30 = 5/30 = 1/6 So the money will be enough for paying them both for 6 days.

प्र: There are n boxes and m fruits. If we put 3 fruits in each box 3 fruits will be excess. If we put 4 fruits in each box 1 box will be excess. Find number of boxes and fruits ? 1359 0

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    3 & 9
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  • 2
    6 & 19
    सही
    गलत
  • 3
    7 & 24
    सही
    गलत
  • 4
    5 & 18
    सही
    गलत
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उत्तर : 3. "7 & 24"
व्याख्या :

Answer: C) 7 & 24 Explanation: 7 boxes & 24 Balls.Let, n = No. of boxes ; m = No. of fruits3n+3 = m---------->(1)4(n-1)= m---------->(2)=>4n-4 = 3n+3;=>4n-3n = 4+3n = 7Put n=7 in eqn(1)=> 3(7)+3 = m21+3 = mm = 24; Number of boxes = 7 and fruits = 24

प्र: First Bank to introduce ATM in India is ? 1741 0

  • 1
    ICICI Bank
    सही
    गलत
  • 2
    HSBC Bank
    सही
    गलत
  • 3
    HDFC Bank
    सही
    गलत
  • 4
    YES Bank
    सही
    गलत
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उत्तर : 2. "HSBC Bank"
व्याख्या :

Answer: B) HSBC Bank Explanation: HSBC (Hongkong and Shanghai Banking Corporation) is the first bank to introduce ATM concept in India in the year 1987 in Mumbai.

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