GATE प्रश्न और उत्तर का अभ्यास करें

प्र: An individual deposited 20% of 25% of 30% of what he had into his account with a bank. If he deposited Rs.750, how much was he having initially with him before depositing ? 2101 0

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    Rs. 38000
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    Rs. 47000
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  • 3
    Rs. 50000
    सही
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  • 4
    Rs. 35000
    सही
    गलत
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उत्तर : 3. "Rs. 50000"
व्याख्या :

Answer: C) Rs. 50000 Explanation: Let 'x' be the amount he had in the bank. => 20/100(25/100(30/100(x))) = 750 x = 750 x 8000/120 = Rs. 50000

प्र: Statement: There was a spurt in criminal activities in the city during the recent festival season.Courses of action:a. The police should immediately investigate into the causes of this increase.b. In future the police should take adequate precaution to avoid recurrence of such situation during festival.c. The known criminals should be arrested before any such season. 2100 0

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    Both a and b follows
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  • 2
    Only c follows
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    Only a follows
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  • 4
    Both b and c follows
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उत्तर : 1. "Both a and b follows"
व्याख्या :

Answer: A) Both a and b follows Explanation: The police ought to find out the lackenings in existing security arrangements and make up for these inadequacies to strengthen security and thus prevent criminal activities in the forthcoming festival. So, both a and b follow. Arresting the known criminals does not ensure safety, for a novice can also indulge in crime. So, c does not follow.

प्र: Robert is traveling on his cycle and has calculated to reach point A at 2 p.m. if he travels at 10 km/hr; he will reach there at 12 noon if he travels at 15 km/hr. At what speed must he travel to reach A at 1 p.m. ? 2100 0

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    20 kmph
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    18 kmph
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    12 kmph
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  • 4
    16 kmph
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उत्तर : 3. "12 kmph"
व्याख्या :

Answer: C) 12 kmph Explanation: Let the distance traveled be x km.Then, x/10 - x/15 = 23x - 2x = 60 => x = 60 km.Time taken to travel 60 km at 10 km/hr = 60/10 = 6 hrs.So, Robert started 6 hours before 2. p.m. i.e., at 8 a.m.Required speed = 60/5 = 12 kmph.

प्र: What is the first term of an arithmetic progression of positive integers ? (I) Sum of the squares of the first and the second term is 116. (II)The fifth term is divisible by 7. 2100 0

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    Only a is sufficient
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    Only b is sufficient
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    Both a & b are necessary
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  • 4
    None
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उत्तर : 1. "Only a is sufficient"
व्याख्या :

Answer: A) Only a is sufficient Explanation: The sum of square of two no is 116 i.e no lie 1-11, because 11x11 =121 which is greater than 116 again after cheaking all possible pair of no only 4 and 10 satisfy this condsn , again the progression is of positive integer so 10 cant not be 1st termso the 1st term is 4,but from the 2nd we cant able to find the 1st term so only 1st statement is sufficient to answer the question

प्र: DNA is made of repeating units called 2099 0

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    Nucleotides
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    Ribozomes
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    Peptides
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  • 4
    Aminoacids
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उत्तर : 1. "Nucleotides"
व्याख्या :

Answer: A) Nucleotides Explanation: DNA is a very long chain polymer made up of thousands of repeating units called nucleotides.   Nucleotide Unit is composed of a phosphate group, a pentose sugar, and a nitrogenous base.   The sides of the DNA ladder are made up of alternating deoxyribose sugar -- phosphate group units.

प्र: Find the next number in the given number series? 2, 19, 0, 21, –2, ? 2099 0

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    23
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  • 2
    25
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  • 3
    27
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  • 4
    29
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उत्तर : 1. "23"
व्याख्या :

Answer: A) 23 Explanation: The given number series 2, 19, 0, 21, –2, ? follows a pattern, 2 2 + 17 = 19 19 - 19 = 0 0 + 21 = 21 21 - 23 = -2 -2 + 25 = 23   Hence, the next number in the series is 23.

प्र: Prashanth sold a album for $ 735 and made a profit of 22.5% . The cost price of the album went up by $120 and so Prashanth increased the selling price by $120. What is his profit % now ? 2097 0

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    19.32 %
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  • 2
    18.75 %
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  • 3
    21.41 %
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  • 4
    22 %
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उत्तर : 2. "18.75 %"
व्याख्या :

Answer: B) 18.75 % Explanation: Prashanth sold a album for $ 735 and made a profit of 22.5% .CP = 735 x 100/122.5 = Rs. 600New CP = 600 + 120 = Rs. 720New SP = 735 + 120 = Rs. 855. Profit = Rs. 135. profit % = 100 x 135/720 = 18.75%.

प्र: What is the next letter in the given seriesM N J Q G ? 2097 0

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    U
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    S
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    T
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  • 4
    H
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उत्तर : 3. "T"
व्याख्या :

Answer: C) T Explanation: 1ST SERIES = M J G... It decreasing by 3 alphabets.2ND SERIES = N Q... It increasing by 3 alphabets. M N J Q G T...

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