Quantitative Aptitude प्रश्न और उत्तर का अभ्यास करें

प्र: In how many ways word of 'GLACIOUS' can be arranged such that 'C' always comes at end? 2779 0

  • 1
    3360
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    गलत
  • 2
    5040
    सही
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  • 3
    720
    सही
    गलत
  • 4
    1080
    सही
    गलत
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उत्तर : 2. "5040"
व्याख्या :

Answer: B) 5040 Explanation: Given word is GLACIOUS has 8 letters. => C is fixed in one of the 8 places Then, the remaining 7 letters can be arranged in 7! ways = 5040.

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 ? 2771 0

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    404
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  • 2
    415
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  • 3
    418
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  • 4
    420
    सही
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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: Seats for Mathematics, Physics and Biology in a school are in the ratio 5 : 7 : 8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats ? 2769 0

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    1 : 2 : 3
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  • 2
    2 : 3 : 4
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    3: 4 : 5
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    4 : 5 : 6
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उत्तर : 2. "2 : 3 : 4"
व्याख्या :

Answer: B) 2 : 3 : 4 Explanation: Seats for Mathematics, Physics and Biology in a school are in the ratio 5 : 7 : 8. Seats for Mathematics, Physics and Biology in a school are 5x, 7x and 8x. There is a proposal to increase these seats by 40%, 50% and 75% respectively. Then Seats for Mathematics, Physics and Biology in a school will be 1.4 X 5x, 1.5 X 7x and 1.75 X 8x and ratio will be 7 : 10.5 : 14  => 2:3:4.

प्र: Out of 135 applicants for a post, 60 are graduates and 80 have experience. What is the ratio of minimum to maximum numberof graduates having experience? 2769 0

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    12:1
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    5:1
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  • 3
    1:5
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  • 4
    1:12
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उत्तर : 4. "1:12"
व्याख्या :

Answer: D) 1:12 Explanation: Given total applicants = 135Given graduates are G=60 Otherthan graduates=135-60 = 75Given experienced candidates = 801) For maximum number of graduates have experience    Total graduates to have experience = 60 2) For minimum number of graduates have experience    Remaining after taking other than graduates in experience= 80-75 = 5

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 ? 2767 0

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    15
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    20
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  • 3
    10
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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 ? 2758 0

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    15:07 hrs
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  • 2
    15:20 hrs
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  • 3
    15:05 hrs
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  • 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 next number in the series 125, 80, 45, 20, .... 2757 0

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    5
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  • 2
    15
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  • 3
    -5
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  • 4
    10
    सही
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उत्तर : 1. "5"
व्याख्या :

Answer: A) 5 Explanation: The pattern is -45, -35, -25, -15 The next number = 20-15= 5

प्र: How many numbers up to 300 and 700 are divisible by 2, 3 and 7 both together ? 2756 0

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    7
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  • 2
    9
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    11
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  • 4
    5
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उत्तर : 2. "9"
व्याख्या :

Answer: B) 9 Explanation: LCM of 2, 3, 7 is 42. => (700 – 300)/42 = 9  22/42 => 9 Numbers.

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