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  1. #8821
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    Post TestFunda Answers - Algebra

    Options
    1) 
    X
    2) 

    Y

    3) 
    Z
    4) 
    All are equally efficient
    Last edited by TestFunda; 17-May-17 at 12:50 PM.

  2. #8822
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    Post TestFunda Answers - Algebra

    4x+2y+z=35 where x, y, z are positive real numbers. Find the maximum value of (x^1/2)*(y^1/4)*(z^1/8).

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    Last edited by pkpiyush2012; 31-May-17 at 8:55 PM.

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    Post TestFunda Answers - Algebra

    what will come in place of question mark(?) in the given number series?

    79,39,19,94, ?
    Options
    1) 
    0.2
    2) 
    1.5
    3) 
    0.5
    4) 
    2
    5) 
    1
    Additional Notes: the correct ans here is given as 1.5 but i did not understand how it came
    Last edited by SAYLI60847; 28-Jun-17 at 4:10 PM.

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    Post TestFunda Answers - Algebra

    Additional Notes: how is d calculation done?? how come 4 is d answer?

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    Post TestFunda Answers - Algebra

    If a+b+c+d=12, what is the maximum value of (a-2)(b-1)(c-3)?

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    Post TestFunda Answers - Algebra








      Let x, y and z be the number of Re. 1, 50p and 25p in the bag.
    As per the given condition,
    x+y+z = 150
    And, 
    x+0.5y+0.25z = 150

    Implies, x+y+z = x+0.5y+0.25z
    Implies, y+z = 0.5y+0.25z
    Implies, 0.5y+0.75z = 0.

    Implies y and z = 0 each.
    Hence, x = 150.
    Last edited by TestFunda; 04-Aug-17 at 5:51 PM.

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  11. #8831
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    Post TestFunda Answers - Algebra

        







    How many real values of x satisfy the given equation?
    Options
    1) 





    a   4

     
    2) 





     3

     
    3) 





     2

     
    4) 








     None of these

     


     
    Additional Notes: how to go about this question

  13. #8833
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    Post TestFunda Answers - Algebra

    Total circumfrance = pie*diameter
    tortoise has covered = 20pie
    remaining distance = 80 pie
    1/8th of total distance = 12.5 pie
    let the velocity of tortoise = u and that of hare =v
    on time comparison we get
    67.5 pie/u = 12.5 pie/v
    5.4v=u so v=u/5.4

    now for remaining journey time taken by tortoise = 12.5 pie/u
    so velocity of hare to make a tie = 7*12.5 pie u / 12.5 pie
    =7u
    so 7u/u/5.4 = 37.80 times answer

  15. #8835
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    Post TestFunda Answers - Algebra

    Options
    1) 

    50

    2) 
    25
    3) 
    36
    4) 
    24
    Additional Notes: the answer is (d)

  16. #8836
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    Post TestFunda Answers - Algebra

    n(n+1)(n+2)(n+3)
    =n(n+1)(n+2)(n+3)1/5
    =1/5
    now,
    10.11.12.13=1/5(10.11.12.13.14-9.10.11.12.13)
    11.12.13.14=1/5(11.12.13.14.15-10.11.12.13.14)
    ................................................................
    ................................................................
    96.97.98.99=1/5(96.97.98.99.100-95.96.97.98.99)

    adding all of the right side terms
    10.11.12.13 + 11.12.13.14 + + 96.97.98.99=1/5(96.97.98.99.100-9.10.11.12.13)
    =1806869592
    the point is we shouldnt go for such long calculation,we should calculate the last digit of the sum and then go by the options.

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