GRE प्रश्न और उत्तर का अभ्यास करें

नवीनतमलोकप्रियमूल्यांकनपेज देखें 37 of 103कुल सवाल 824 जॉइन Examsbook

प्र: Fill in the blanks with suitable prepositions from the given options. The dog was sitting _______ the table waiting _______ catch the ball that was thrown ________ him _________ his master. 2183 0

  • 1
    below, for, to, by
    सही
    गलत
  • 2
    under, for, towards, by
    सही
    गलत
  • 3
    up, to, towards, by
    सही
    गलत
  • 4
    under, to, towards, by
    सही
    गलत
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उत्तर : 4. "under, to, towards, by"
व्याख्या :

Answer: D) under, to, towards, by Explanation: The dog was sitting under the table waiting to catch the ball that was thrown towards him by his master.

प्र: FRIEND : FPIBNZ :: PATRON : ? 2180 0

  • 1
    PTYOPI
    सही
    गलत
  • 2
    PYTOPJ
    सही
    गलत
  • 3
    PYTOOJ
    सही
    गलत
  • 4
    PYTPOJ
    सही
    गलत
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उत्तर : 3. "PYTOOJ"
व्याख्या :

Answer: C) PYTOOJ Explanation: FRIEND : FPIBNZ Follows a pattern that, F - F R- second letter to left of R i.e, P I - I E - Third letter to left of E i.e, B N - N D - Fourth letter to left of D i.e, Z Similarly, for PATRON  P - P A -  second letter to left of A i.e, Y T - T R - Third letter to left of R i.e, O O - O N - Fourth letter to left of N i.e, J PATRON : PYTOOJ   Therefore, FRIEND : FPIBNZ :: PATRON : PYTOOJ

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? 2174 0

  • 1
    2 kmph
    सही
    गलत
  • 2
    4 kmph
    सही
    गलत
  • 3
    6 kmph
    सही
    गलत
  • 4
    8 kmph
    सही
    गलत
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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: Size of the primary memory of a pc ranges between 2173 0

  • 1
    256 kb to 640 kb
    सही
    गलत
  • 2
    64 kb to 256 kb
    सही
    गलत
  • 3
    256 kb to 512 kb
    सही
    गलत
  • 4
    2 kb to 8 kb
    सही
    गलत
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उत्तर : 1. "256 kb to 640 kb"
व्याख्या :

Answer: A) 256 kb to 640 kb Explanation: Size of the primary memory of a PC ranges between 256 KB to 640 KB.

प्र: A secret can be told to only 3 persons in 3 minutes. Each person in turn tells 3 other persons in the next 3 minutes and the processes continues accordingly. In 30 minutes how many persons can be told this secret in this way ? 2167 0

  • 1
    88572
    सही
    गलत
  • 2
    77854
    सही
    गलत
  • 3
    99584
    सही
    गलत
  • 4
    55654
    सही
    गलत
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उत्तर : 1. "88572"
व्याख्या :

Answer: A) 88572 Explanation: Given a secret is told to 3 persons in 3 minutes.And if the process continues with each person saying 3 other persons,In 30 minutes => the rocess for 10 times because each person time is 3 minutes.Required number of persons = 3 + 32 + 33 + .... + 39 + 310   Now it forms a geometric progression,   Sum to n terms is S = arn - 1r - 1   Here a = 3, r = 3  => 59048 x 3 /2   = 88572.

प्र: A shopkeeper has a job to print certain number of documents and there are three machines P, Q and R for this job. P can complete the job in 3 days, Q can complete the job in 4 days and R can complete the job in 6 days. How many days the shopkeeper will it take to complete the job if all the machines are used simultaneously ? 2167 0

  • 1
    4/3 days
    सही
    गलत
  • 2
    2 days
    सही
    गलत
  • 3
    3/2 days
    सही
    गलत
  • 4
    4 days
    सही
    गलत
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उत्तर : 1. "4/3 days"
व्याख्या :

Answer: A) 4/3 days Explanation: Let the total number of documents to be printed be 12.  The number of documents printed by P in 1 day = 4.  The number of documents printed by Q in 1 day = 3.  The number of documents printed by R in 1 day = 2.  Thus, the total number of documents that can be printed by all the machines working simultaneously in a single day = 9.   Therefore, the number of days taken to complete the whole work = 12/9 = 4/3 days.

प्र: 'A' sold an article to 'B' at a profit of 20%. 'B' sold the same article to 'C' at a loss of 25% and 'C' sold the same article to 'D' at a profit of 40%. If 'D' paid Rs 252 for the article, then find how much did 'A' pay for it? 2166 0

  • 1
    Rs.196
    सही
    गलत
  • 2
    Rs.210
    सही
    गलत
  • 3
    Rs.200
    सही
    गलत
  • 4
    Rs.235
    सही
    गलत
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उत्तर : 3. "Rs.200"
व्याख्या :

Answer: C) Rs.200 Explanation: Let the article costs 'X' to ACost price of B = 1.2XCost price of C = 0.75(1.2X) = 0.9XCost price of D = 1.4(0.9X) = 1.26X = 252Amount paid by A for the article = Rs. 200.

प्र: What comes down but never goes up? 2164 0

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उत्तर :
व्याख्या :

Rain is what only comes down but never goes up.

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