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प्र: 5% people of a village in India died by dengue, 15% of the remainder left the village on account of fear. If now the population is reduced to 3553, how much was it in the beginning ? 2511 0

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    4400
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    3100
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    2800
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  • 4
    5600
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उत्तर : 1. "4400"
व्याख्या :

Answer: A) 4400 Explanation: Let 'P' be the original population at the beginning P x (95/100) x (85/100) = 3553 P = 4400.

प्र: P alone can complete a piece of work in 6 days. Work done by Q alone in one day is equal to one-third of the work done by P alone in one day. In how many days can the work be completed if P and Q work together  ? 2505 0

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    5 (2/3)
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    6 (3/4 )
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    4 (1/2)
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    3
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उत्तर : 3. "4 (1/2)"
व्याख्या :

Answer: C) 4 (1/2) Explanation: Work done by P alone in one day = 1/6th of the total work done by Q alone in one day = 1/3(of that done by P in one day) = 1/3(1/6 of the total) = 1/18 of the total.    Work done by P and Q, working together in one day = 1/6 + 1/18  = 4/18 = 2/9    They would take 9/2 days = 4 (1/2) days to complete the work working together.

प्र: The calendar for the year 2018 will be the same for the year 2503 0

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    2023
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    2027
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    2029
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    2022
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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: The Length of the Day is determined in 2497 0

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    length of the hours
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    length of the year
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    astronomical units
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    solar terms
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उत्तर : 3. "astronomical units"
व्याख्या :

Answer: C) astronomical units Explanation: The Length of the Day is determined in Astronomical Units. The length of a day corresponds to the time the Earth takes to turn around on its axis, which is approximately 24 hours. But it's not exactly 24 hours.  This phenomenon is due to tides raised by the Moon which slow Earth's rotation. Because of the way the second is defined, the mean length of a day is now about 86 400.002 seconds, and is increasing by about 1.7 milliseconds per century.

प्र: What is better, to have 70% discount or 40 and 30% discount consequently ? 2495 0

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    40% is better
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    70% is better
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    Both are same
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    None
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उत्तर : 2. "70% is better"
व्याख्या :

Answer: B) 70% is better Explanation: Let Price be Rs.100 1st CASE: Then 100 x 70/100 = 70=> price after discount = 100-70 = Rs.30 2nd CASE: Then 100 x 40/100 = 40=> price after discount = 100-40 = Rs.60then60 x 30/100 = 18=> price after 2 consequent discount = 60-18 = Rs.42 =>from 1 and 2 cases, 70% discount is better.

प्र: Play is to actor as concert is to 2493 0

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    Musician
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    percussion
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    symphony
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    piano
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उत्तर : 1. "Musician"
व्याख्या :

Answer: A) Musician Explanation: An actor performs in a play. A musician performs at a concert. Choices b, c, and d are incorrect because none is people who perform.   Hence, Play is to actor as concert is to Musician.

प्र: In what time will Rs. 3300 becomes Rs. 3399 at 6% per annum interest compounded half-yearly ? 2492 0

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    Quarter months
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    Half year
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    2 years
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    1 year
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उत्तर : 2. "Half year"
व्याख्या :

Answer: B) Half year Explanation: 3300 ----- 3% ↑ (1st time interval, 99) → 3399. Here, time interval is given as half-yearly i.e. 6 months.

प्र: What should come in place of question mark (?) in the following number series?  132       156       ?         210          240          272 2486 0

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    196
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    182
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    199
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    204
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उत्तर : 2. "182"
व्याख्या :

Answer: B) 182 Explanation: The given series follows a logic that 11 x 12, 12 x 13, 13 x 14, 14 x 15, 15 x 16,... So the missing number is 13 x 14 = 182

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