GATE प्रश्न और उत्तर का अभ्यास करें

प्र: When a computer prints a report this output is called 2374 0

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    Soft copy
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    Hard copy
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  • 3
    Printing
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  • 4
    Program
    सही
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उत्तर : 2. "Hard copy"
व्याख्या :

Answer: B) Hard copy Explanation: Hard copy is the output which is printed by the computer.

प्र: Three strategies P, Q and R have been initiated for cost cutting in a company producing respectively 20%, 30% and 10% savings. Assuming that they operate independently, what is the net saving achieved ? 2373 0

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    49.6%
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  • 2
    50.4%
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  • 3
    33.67%
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  • 4
    66.66%
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उत्तर : 1. "49.6%"
व्याख्या :

Answer: A) 49.6% Explanation: As these three strategies P, Q and R are independent so these will cut cost one after the other.If initial cost is Rs 100, then20% cost is cut after initializing strategy P, then cost will remain 80% = 80further 30% cost is cut after strategy Q, then cost will remain 70% of 80 = 56further 10% cost is cut after strategy R, then cost will remain 90% of 56 = 50.4 Thus final cost remains 50.4 % of the original cost. Hence net saving is 100 - 50.4 = 49.6 %.

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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 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 ? 2369 0

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    88572
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  • 2
    77854
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  • 3
    99584
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  • 4
    55654
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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: Tilak rides on a cycle to a place at speed of 22 kmph and comes back at a speed of 20 kmph. If the time taken by him in the second case is 36 min. more than that of the first case, what is the total distance travelled by him (in km)? 2366 0

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    132 km
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    264 km
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  • 3
    134 km
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  • 4
    236 km
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उत्तर : 2. "264 km"
व्याख्या :

Answer: B) 264 km Explanation: Let the distance travelled by Tilak in first case or second case = d kms Now, from the given data, d/20 = d/22 + 36 min => d/20 = d/22 + 3/5 hrs => d = 132 km.   Hence, the total distance travelled by him = d + d = 132 + 132 = 264 kms.

प्र: Tides are primarily a result of the  ____ ? 2365 0

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    Attraction of the Moon
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    Farrel's law
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    Ocean Currents
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    Earth's pressure system
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उत्तर : 1. "Attraction of the Moon"
व्याख्या :

Answer: A) Attraction of the Moon Explanation:

प्र: How many lines of symmetry does a Pentagon have? 2365 0

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    4
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    5
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  • 3
    6
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  • 4
    0
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उत्तर : 2. "5"
व्याख्या :

Answer: B) 5 Explanation: A regular Pentagon have 5 sides and 5 lines of symmetry.  The number of lines of symmetry in a regular polygon is equal to the number of sides.

प्र: What is the systematic name of NH4ClO3? 2364 0

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    Ammonium Chloride
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    Ammonium Chlorate
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    Ammonium Chlorane
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  • 4
    Ammonium Chlorine
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उत्तर : 2. "Ammonium Chlorate"
व्याख्या :

Answer: B) Ammonium Chlorate Explanation: In common we all call the systematic name of NH4ClO3 as Ammonium Chlorate. But originally the systematic name is azanium trioxidochlorate.

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