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Math Help - I'm asking for help to show the working out of an aptitude test example

  1. #1
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    I'm asking for help to show the working out of an aptitude test example

    Hi all, Iím finding in a lot of job interviews Iím required to complete some basic aptitude tests so Iíve been checking out some examples online for practice and come across this example.


    A=5
    B=0
    C=2
    D=10
    E=2
    What is then AB + EE - (ED)B + (AC)E =


    The answer is 103 but Iíve no idea how it was reached, getting to the 50+22 is easy enough but as soon as I hit the brackets Iím totally lost
    Iím just looking for an explanation on how it was worked out and I apologize in advance if Iíve posted this in the wrong thread.

    Imageshack - unledecz.png
    BTW hereís a screenshot of how it was expressed on the example.
    Last edited by Yarbles; October 17th 2011 at 09:30 PM.
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  2. #2
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    Re: I'm asking for help to show the working out of an aptitude test example

    Does AB mean the product of A and B or something else?
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  3. #3
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    Re: I'm asking for help to show the working out of an aptitude test example

    I donít know to be honest Iíve no more info to offer other than that screenshot I posted, Iím just reading those letters as straight out representations of their allotted numbers until I see a + or Ė

    Does (ED)B mean 210x0 or 12x0 ? Thatís assuming the those brackets indicate that the value within has to be multiplied with B which is 0
    Iím totally and utterly confused
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  4. #4
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    Re: I'm asking for help to show the working out of an aptitude test example

    Quote Originally Posted by Yarbles View Post
    Hi all, Iím finding in a lot of job interviews Iím required to complete a basic aptitude tests so Iíve been checking out some examples online for practice and come across this example.

    A=5, B=0, C=2, D=10, E=2

    What is then AB + EE - (ED)^B + (AC)^E =
    ...
    Notice that B and E should be exponents. I've corrected the in the "Quote" above.

    It looks better in LaTeX:

    B + EE - (ED)^B + (AC)^E

    Did you know the any non-zero number raised to the zero power is 1 ?
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  5. #5
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    Re: I'm asking for help to show the working out of an aptitude test example

    Thanks SammyS for your help, youíve put me on the right track and Iíve now found some easy to understand tutorials regarding exponentiation.
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  6. #6
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    Re: I'm asking for help to show the working out of an aptitude test example

    I've worked it out
    5x0 = 0 + 2x2 = 4 -
    (20)^0 1 = 3
    +
    (10)^2 = 100

    3 + 100 = 103

    103 = Correctamundo


    This is just a personal bugbear, but why didnít they give clear instructions to multiply the AB, EE and so on , after all they did give clear instructions to both + and Ė


    So once again thanks very much emakarov & SammyS
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