Quantitative Aptitude 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 ? 2085 0

  • 1
    Rs. 38000
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  • 2
    Rs. 47000
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  • 3
    Rs. 50000
    सही
    गलत
  • 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: Find the next number in the given number series? 2, 19, 0, 21, –2, ? 2084 0

  • 1
    23
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  • 2
    25
    सही
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  • 3
    27
    सही
    गलत
  • 4
    29
    सही
    गलत
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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: In a 48 ltr mixture, the ratio of milk and water is 5:3. How much water should be added in the mixture so as the ratio will become 3:5 ? 2083 0

  • 1
    24 lit
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  • 2
    16 lit
    सही
    गलत
  • 3
    32 lit
    सही
    गलत
  • 4
    8 lit
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उत्तर : 3. "32 lit"
व्याख्या :

Answer: C) 32 lit Explanation: Given mixture = 48 lit Milk in it = 48 x 5/8 = 30 lit => Water in it = 48 - 30 = 18 lit Let 'L' lit of water is added to make the ratio as 3:5 => 30/(18+L) = 3/5 => 150 = 54 + 3L => L = 32 lit.

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 ? 2083 0

  • 1
    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: In how many different ways can the letters of the word 'THERAPY' be arranged so that the vowels never come together? 2083 0

  • 1
    1440
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  • 2
    720
    सही
    गलत
  • 3
    2250
    सही
    गलत
  • 4
    3600
    सही
    गलत
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उत्तर : 4. "3600"
व्याख्या :

Answer: D) 3600 Explanation: Given word is THERAPY. Number of letters in the given word = 7 These 7 letters can be arranged in 7! ways. Number of vowels in the given word = 2 (E, A) The number of ways of arrangement in which vowels come together is 6! x 2! ways   Hence, the required number of ways can the letters of the word 'THERAPY' be arranged so that the vowels never come together = 7! - (6! x 2!) ways = 5040 - 1440 = 3600 ways.

प्र: Prithvi spent Rs.89,745 on his college fees, Rs 51,291 on Personality Development Classes, and the remaining 27% of the total amount he had as cash with him. What was the total amount? 2083 0

  • 1
    Rs.1,85,400
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    गलत
  • 2
    Rs.1,89,600
    सही
    गलत
  • 3
    Rs.1,91,800
    सही
    गलत
  • 4
    Rs.1,93,200
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उत्तर : 4. "Rs.1,93,200"
व्याख्या :

Answer: D) Rs.1,93,200 Explanation:

प्र: Second & fourth Saturdays and every Sunday is a holiday. How many working days will be there in a month of 31 days beginning on a Friday ? 2081 0

  • 1
    24
    सही
    गलत
  • 2
    23
    सही
    गलत
  • 3
    22
    सही
    गलत
  • 4
    25
    सही
    गलत
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उत्तर : 1. "24"
व्याख्या :

Answer: A) 24 Explanation: Given that the month begins on a Friday and has 31 days   Sundays = 3rd, 10th, 17th, 24th, 31st=> Total Sundays = 5   Every second & fourth Saturday is holiday. 2nd & 4th Saturday in every month = 2   Total days in the month = 31   Total working days = 31 - (5 + 2) = 24 days.

प्र: The average age of husband, wife and their child 3 years ago was 24 years and that of wife and child 5 years ago was 25 years. The present age of the husband is: 2079 0

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    21 yrs
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  • 2
    27 yrs
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  • 3
    29 yrs
    सही
    गलत
  • 4
    31 yrs
    सही
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उत्तर : 1. "21 yrs"
व्याख्या :

Answer: A) 21 yrs Explanation: Sum of ages of husband, wife and child= (24 × 3) + 9 = 81 years Sum of ages of wife and child => 25 × 2 + 10 = 50 + 10 = 60 years Age of husband = 81 - 60 = 21 years.

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