Quantitative Aptitude प्रश्न और उत्तर का अभ्यास करें

प्र: If two fractions, each of which has a value between 0 and 1, are multiplied together, the product will be : 2641 0

  • 1
    always greater than either of the original fractions
    सही
    गलत
  • 2
    always less than either of the original fractions
    सही
    गलत
  • 3
    sometimes greater and sometimes less than either of the original fractions
    सही
    गलत
  • 4
    remains the same
    सही
    गलत
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उत्तर : 2. "always less than either of the original fractions"
व्याख्या :

Answer: B) always less than either of the original fractions Explanation: We can easily Answer this by taking some values.   The question states that the two fractions, each have values between 0 and 1.Let us say one of the fraction is 1/2 and the other fraction is 1/3 .The product of the two fractions is 1/2 x 1/3 = 1/6 . is lesser than both 1/2  and 1/3 .So, the correct answer is that the product is always less than either of the original fractions.

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उत्तर : 2. "16:25"

प्र: Karthik read 613 th of a book in 1st week and 59 th of the remaining book in 2nd week. If there were 100 pages unread after 2nd week, how many pages were there in the book ? 2619 0

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    404
    सही
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  • 2
    415
    सही
    गलत
  • 3
    418
    सही
    गलत
  • 4
    420
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उत्तर : 3. "418"
व्याख्या :

Answer: C) 418 Explanation: Let the total book be 1 Then, in the 1st week 613th of book is read i.e remaining pages =  1-613=713 in 2nd week he read 59th of it i.e 59×713=35117Remaining pages after 2nd week = 713-35117=28117 But given remaining pages after 2nd week = 100   28x117=100 --> x = 418   The total pages in the book are 418

प्र: Find the Odd One Out? 4, 6, 12, 30, 81, 315. 2618 0

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    6
    सही
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  • 2
    12
    सही
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  • 3
    81
    सही
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  • 4
    315
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उत्तर : 3. "81"
व्याख्या :

Answer: C) 81 Explanation: Given the number series is 4, 6, 12, 30, 81, 315. Here it follows a pattern that 4 4 x 1.5 = 6 6 x 2 = 12 12 x 2.5 = 30 30 x 3 = 90 not equals to 81 90 x 3.5 = 315   Hence the odd one in the series is 81.

प्र: A man could buy a certain number of notebooks for Rs.300. If each notebook cost is Rs.5 more, he could have bought 10 notebooks less for the same amount. Find the price of each notebook ? 2615 0

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    15
    सही
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  • 2
    20
    सही
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  • 3
    10
    सही
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  • 4
    8
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उत्तर : 3. "10"
व्याख्या :

Answer: C) 10 Explanation: Let the price of each note book be Rs.x. Let the number of note books which can be brought for Rs.300 each at a price of Rs.x be y. Hence xy = 300 => y = 300/x (x + 5)(y - 10) = 300 => xy + 5y - 10x - 50 = xy =>5(300/x) - 10x - 50 = 0 => -150+x2+5x multiplying both sides by -1/10x => x2+15x-10x-150=0 => x(x + 15) - 10(x + 15) = 0 => x = 10 or -15 As x>0, x = 10.

प्र: A train for Fathehpur leaves for every 2 hrs 30 min from Agra station. An announcement was made that train left 37 mins ago and next train comes at 17:00hrs. At what time was the announcement made ? 2613 0

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    15:07 hrs
    सही
    गलत
  • 2
    15:20 hrs
    सही
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  • 3
    15:05 hrs
    सही
    गलत
  • 4
    15:00 hrs
    सही
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उत्तर : 1. "15:07 hrs"
व्याख्या :

Answer: A) 15:07 hrs Explanation: Next train comes at 17:00 hrs.So, last train will be = 17:00hrs - 2:30hrs= 14:30hrsAnnouncement made after 37 min of the last train.S0, 14:30hrs + 00:37 min= 15:07 hrs.

प्र: Find the odd one out? 6, 3, 3, 4.5, 10 2609 0

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    3
    सही
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  • 2
    4.5
    सही
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  • 3
    6
    सही
    गलत
  • 4
    10
    सही
    गलत
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उत्तर : 4. "10"
व्याख्या :

Answer: D) 10 Explanation: Here the given number series is 6, 3, 3, 4.5, 10 The odd one in the given series is 10 The pattern it follows is 6 6 x 0.5 = 3 3 x  1  = 3 3 x 1.5 = 4.5 4.5 x 2 = 9   Hence, the odd number is 10.

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