Quantitative Aptitude प्रश्न और उत्तर का अभ्यास करें

प्र: 7, 11, 19, 35, ? Find the next number in the given number series? 2479 0

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    131
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  • 2
    94
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  • 3
    83
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  • 4
    67
    सही
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उत्तर : 4. "67"
व्याख्या :

Answer: D) 67 Explanation: Here the given series 7, 11, 19, 35, ? follows a pattern that (x 2 - 3) i.e, 7 7 x 2 - 3 = 11 11 x 2 - 3 = 19 19 x 2 - 3 = 35 35 x 2 - 3 = 67 67 x 2 - 3 = 131   Hence the next number in the given number series is 67.

प्र: A motorboat goes 8 km an hour in still water, but takes thrice as much time in going the same distance against the current than going with the current. Then find the speed of the current? 2335 0

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

Answer: A) 4 kmph Explanation: Let the speed of current = 'C' km/hr   Given the speed of boat in still water = 6 kmph   Let 'd' kms be the distance it covers.   According to the given data,   Boat takes thrice as much time in going the same distance against the current than going with the current   i.e, d8 - C = 3 × d8 + C   ⇒ 24 - 3C = 8 + C⇒ 4C = 16⇒ C = 4 kmph   Hence, the speed of the current C = 4 kmph.

प्र: The calendar for the year 2018 will be the same for the year 2793 0

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    2023
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  • 2
    2027
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  • 3
    2029
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  • 4
    2022
    सही
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उत्तर : 3. "2029"
व्याख्या :

Answer: C) 2029 Explanation: How to find the years which have the same Calendars :   Leap year calendar repeats every 28 years. Here 28 is distributed as 6 + 11 + 11.   Rules: a) If given year is at 1st position after Leap year then next repeated calendar year is Givenyear+6. b) If given year is at 2nd position after Leap year then next repeated calendar year is Givenyear+11. c) If given year is at 3rd position after Leap year then next repeated calendar year is Givenyear+11.   Now, the given year is 2018 We know that 2016 is a Leap year. 2016    2017    2018    2019  2020 Lp Y      1st     2nd      3rd     Lp Y   Here 2018 is at 2 nd position after the Leap year. According to rule b) the calendar of 2018 is repeated for the year is 2018 + 11 = 2029.

प्र: Simplify the following and find the value of ?   13 of ? + 47 of 114 of 539 = 31% of 2000 1703 0

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    1134
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  • 2
    1237
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  • 3
    1187
    सही
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  • 4
    1249
    सही
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उत्तर : 1. "1134"
व्याख्या :

Answer: A) 1134 Explanation: 13 x ? + 47 x 114 x 539 = 31100 x 2000? = 378 x 3? = 1134

प्र: What is the difference between the compound interests on Rs. 5000 for 11⁄2 years at 4% per annum compounded yearly and half-yearly? 1361 0

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    Rs. 1.80
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  • 2
    Rs. 2.04
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  • 3
    Rs. 3.18
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  • 4
    Rs. 4.15
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उत्तर : 2. "Rs. 2.04"
व्याख्या :

Answer: B) Rs. 2.04 Explanation: Compound Interest for 1 1⁄2 years when interest is compounded yearly = Rs.(5304 - 5000) Amount after 11⁄2 years when interest is compounded half-yearly Compound Interest for 1 1⁄2 years when interest is compounded half-yearly = Rs.(5306.04 - 5000) Difference in the compound interests = (5306.04 - 5000) - (5304 - 5000)= 5306.04 - 5304 = Rs. 2.04

प्र: The average weight of 45 passengers in a bus is 52 kg. 5 of them whose average weight is 48 kg leave the bus and other 5 passengers whose average weight is 54 kg join the bus at the same stop. What is the new average weight of the bus? 5447 0

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    54.21 kgs
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  • 2
    51.07 kgs
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  • 3
    52.66 kgs
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  • 4
    53.45 kgs
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उत्तर : 3. "52.66 kgs"
व्याख्या :

Answer: C) 52.66 kgs Explanation: Given total number of passengers in the bus = 45 First average weight of 45 passengers = 52 kgs Average weight of 5 passengers who leave bus = 48 Average weight of 5 passengers who joined the bus = 54 Therefore, the net average weight of the bus is given by = 45 x 52 - 5 x 48 + 5 x 5445 = 237045= 1583= 52.66 kgs.

प्र: Chennai express left Hyderabad for Chennai at 14 : 30 hours, travelling at a speed of 60 kmph and Charminar Express left Hyderabad for Chennai on the same day at 16 : 30 hours, travelling at a speed of 80 kmph. How far away from Hyderabad will the two trains meet? 1790 0

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    360 kms
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  • 2
    480 kms
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  • 3
    520 kms
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  • 4
    240 kms
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उत्तर : 2. "480 kms"
व्याख्या :

Answer: B) 480 kms Explanation: Now, the distance covered by Chennai express in 2 hrs = 60 x 2 = 120 kms Let the Charminar Express takes 't' hrs to catch Chennai express => 80 x t = 60 x (2 + t) => 80 t = 120 + 60t => t = 6 hrs   Therefore, the distance away from Hyderabad the two trains meet = 80 x 6 = 480 kms.

प्र: How many words can be formed with or without meaning by using three letters out of k, l, m, n, o without repetition of alphabets. 1278 0

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    60
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  • 2
    120
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  • 3
    240
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  • 4
    30
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उत्तर : 1. "60"
व्याख्या :

Answer: A) 60 Explanation: Given letters are k, l, m, n, o = 5 number of letters to be in the words = 3 Total number of words that can be formed from these 5 letters taken 3 at a time without repetation of letters = 5P3 ways. ⇒ 5P3 = 5 x 4 x 3 = 60 words.

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