GRE प्रश्न और उत्तर का अभ्यास करें

प्र: Choose the pair which shows the same relation of the given pair from the following options ?  BRISTLE : BRUSH 3162 0

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    arm : leg
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  • 2
    key : piano
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  • 3
    recline : chair
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  • 4
    stage : curtain
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उत्तर : 2. "key : piano"
व्याख्या :

Answer: B) key : piano Explanation: A bristle is a part of a brush; a key is a part of a piano.

प्र: What City has No People? 3159 0

  • 1
    Velocity
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  • 2
    Electricity
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  • 3
    Elasticity
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  • 4
    All the above
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उत्तर : 4. "All the above"
व्याख्या :

Answer: D) All the above Explanation: Answer for What City has No People can be any of these words which has city in it like Velocity, Elasticity or Electricity. In general the answer for the riddle What City has No People is Electricity.

प्र: What travels around the world and stays in one spot? 3151 0

  • 1
    Slippers
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  • 2
    Walking stick
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  • 3
    Stamps
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  • 4
    None of the above
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उत्तर : 3. "Stamps"
व्याख्या :

Answer: C) Stamps Explanation: Stamps are what travel around the worldstaying in one spot. Slippers and walking stick can also travel around the world but they will not stay at one spot. So they are eliminated.

प्र: Two trains start from same place at same time at right angles to each other. Their speeds are 36km/hr and 48km/hr respectively. After 30 seconds the distance between them will be ? 3150 0

  • 1
    900 mts
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  • 2
    300 mts
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  • 3
    250 mts
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  • 4
    500 mts
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उत्तर : 4. "500 mts"
व्याख्या :

Answer: D) 500 mts Explanation: Using pythagarous theorem,distance travelled by first train = 36x5/18x30 = 300mdistance travelled by second train = 48x5/18x30 = 400mso distance between them =√( 90000 + 160000) = √250000 = 500mts.

प्र: How many 6-digit even numbers can be formed from the digits 1, 2, 3, 4, 5, 6 and 7 so that the digits should not repeat and the second last digit is even ? 3146 0

  • 1
    521
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  • 2
    720
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  • 3
    420
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  • 4
    225
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उत्तर : 2. "720"
व्याख्या :

Answer: B) 720 Explanation: Let last digit is 2when second last digit is 4 remaining 4 digits can be filled in 120 ways, similarly second last digit is 6 remained 4 digits can be filled in 120 ways.so for last digit = 2, total numbers=240   Similarly for 4 and 6When last digit = 4, total no. of ways =240and last digit = 6, total no. of ways =240so total of 720 even numbers are possible.

प्र: What is better, to have 70% discount or 40 and 30% discount consequently ? 3143 0

  • 1
    40% is better
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  • 2
    70% is better
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  • 3
    Both are same
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  • 4
    None
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उत्तर : 2. "70% is better"
व्याख्या :

Answer: B) 70% is better Explanation: Let Price be Rs.100 1st CASE: Then 100 x 70/100 = 70=> price after discount = 100-70 = Rs.30 2nd CASE: Then 100 x 40/100 = 40=> price after discount = 100-40 = Rs.60then60 x 30/100 = 18=> price after 2 consequent discount = 60-18 = Rs.42 =>from 1 and 2 cases, 70% discount is better.

प्र: Rajesh rows in still water with a speed of 4.5 kmph to go to a certain place and comes back. Find his average speed for the whole journey, if the river is flowing with a speed of 1.5 kmph? 3139 0

  • 1
    2 kmph
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  • 2
    4 kmph
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  • 3
    6 kmph
    सही
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  • 4
    8 kmph
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उत्तर : 2. "4 kmph"
व्याख्या :

Answer: B) 4 kmph Explanation: Let the distance in one direction = k kms Speed in still water = 4.5 kmph Speed of river = 1.5 Hence, speed in upstream = 4.5 - 1.5 = 3 kmph Speed in downstream = 4.5 + 1.5 = 6 kmph Time taken by Rajesh to row upwards = k/3 hrs Time taken by Rajesh to row downwards = k/6 hrs Now, required Average speed =Total distanceTotal speed = 2kk3 + k6 = 2k x 186k + 3k = 4 kmph    Therefore, the average speed of the whole journey = 4kmph.

प्र: A trader mixes 36 kg of rice at Rs. 20 per kg with 14 kg of rice of other variety at Rs. 36 per kg and sells the mixture at Rs. 30 per kg. His profit percent is: 3138 0

  • 1
    25%
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    गलत
  • 2
    21.14%
    सही
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  • 3
    22.54%
    सही
    गलत
  • 4
    27.32%
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उत्तर : 3. "22.54%"
व्याख्या :

Answer: C) 22.54% Explanation: C.P. of 50 kg rice = Rs. (36 x 20 + 14 x 36) = Rs. (720 + 504) = Rs.1224.   S.P. of 56 kg rice = Rs. (50 x 30) = Rs.1500. Profit = 1500 - 1224 = Rs.276    Profit % = ProfitC.P×100  = 2761224×100 = 22.54%.

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