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प्र: Statements : All keys are locks. All locks are bangles. All bangles are cars. Conclusion : a. Some cars are locks.                    b. Some bangles are keys.                    c. Some cars are keys. 2619 0

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    Only a follows
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  • 2
    Only c follows
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  • 3
    Only a & b follows
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  • 4
    a, b & c follows
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उत्तर : 4. "a, b & c follows"
व्याख्या :

Answer: D) a, b & c follows Explanation: All locks are bangles + All bangles are cars = A + A = A= All locks are cars => Some cars are locks.Hence conclusion (a) follows.All keys are locks + All locks are bangles = A + A = A= All keys are bangles => some bangles are keys.Hence conclusion (b) follows.All keys are bangles + All bangles are cars = A + A = A= All keys are cars => Some cars are keys.Hence conclusion (C) follows. Thus all a, b and c follows.

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उत्तर :
व्याख्या :

Let the ratio be 'R' Total number of students = 1050 Then, 9R + 5R = 1050 14R = 1050 => R = 75   Hence, the number of boys = 9R = 9 x 75 = 675

प्र: The capacity of a tank is 2400 m3.  A pump can be used both for filling and emptying the tank.  The emptying capacity of the pump is 10 m3/minute higher than its filling capacity. And also, the pump needs 8 minutes less to empty the tank than to fill it. Find the filling capacity of the pump. 2617 0

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    46 cub.m/min
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  • 2
    44 cub.m/min
    सही
    गलत
  • 3
    48 cub.m/min
    सही
    गलत
  • 4
    50 cub.m/min
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    गलत
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उत्तर : 4. "50 cub.m/min"
व्याख्या :

Answer: D) 50 cub.m/min Explanation: Let filling capacity of the pump be 'F' m3/min Then, the filling capacity of the pump will be (F + 10) m3/min From the given data, 2400F - 2400F+10= 8⇒ 2400 F+10-FF(F+10) =8⇒ F2 + 10F - 3000 = 0⇒ F = 50 m3/min

प्र: Sonika invested an amount of Rs.5800 for 2 years. At what rate of compound interest will she get an amount of Rs.594.50 at the end of 2 years ? 2614 0

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    6.5%
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    6%
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  • 3
    5%
    सही
    गलत
  • 4
    4.5%
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उत्तर : 3. "5%"
व्याख्या :

Answer: C) 5% Explanation: C.I = P1+r100t-1   594.5 = 58001+r1002-1  594.55800+1=1+r1002   r100=1.05-1=0.05=> r = 5 % .

प्र: What group sets hunting regulations in most states? 2614 0

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    Forest management agency
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    Head hunting firms agency
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    Hunting outfitters agency
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  • 4
    A wildlife management agency
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उत्तर : 4. "A wildlife management agency"
व्याख्या :

Answer: D) A wildlife management agency Explanation: A wildlife management agency sets hunting regulations in most states.     These agencies will have regular meetings where the public can voice their concerns and make suggestions. Hunters wishing to propose changes to the regulations should participate in these meetings or join a hunting organization that interacts with the agency.

प्र: Which best summarizes the concept of natural selection? 2612 0

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    the fittest organisms survive and reproduce
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    an organism will always adapt to its environment
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    an organism will always mutate to survive
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  • 4
    a mutation always makes a species fitter
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उत्तर : 1. "the fittest organisms survive and reproduce"
व्याख्या :

Answer: A) the fittest organisms survive and reproduce Explanation: Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.

प्र: Who translated Mahabharata into Persian? 2612 0

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    Jahangir
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    Aurangzeb
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    Akbar
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  • 4
    Shahjahan
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उत्तर : 3. "Akbar"
व्याख्या :

Answer: C) Akbar Explanation: The Mahabharata was translated into Persian at Akbar’s orders, by Faizi and 'Abd al-Qadir Bada' uni (c. 1540 – 1615) and named Razmnameh.

प्र: In 1933 congress repealed prohibition with the 2610 0

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    21st Amendment
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  • 2
    20th Amendment
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  • 3
    19th Amendment
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  • 4
    18th Amendment
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उत्तर : 1. "21st Amendment"
व्याख्या :

Answer: A) 21st Amendment Explanation: In 1933, Congress repealed prohibition with the 21st amendment. At it’s heart, the scopes trial was a clash between religion and science. Nativists were opposed to immigration because they feared that immigration would be a damage to America’s traditions and that it would result in a loss of jobs. The Prohibition Era in United States history lasted from 1919 to 1933. It was defined by a complete prohibition of the manufacturing, sale, and transportation of alcoholic beverages in the United States.

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