Results 1 to 4 of 4

Math Help - Question on Indices??

  1. #1
    Newbie
    Joined
    Jul 2012
    From
    UK
    Posts
    2

    Question on Indices??

    The Question is;

    Evaulate: 102x42x103 104x4

    The answer is 40, apparently. But I have no idea how to get to it or what this has to do with indices?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Oct 2009
    Posts
    5,546
    Thanks
    780

    Re: Question on Indices??

    Quote Originally Posted by BadatMaths View Post
    Evaulate: 102x42x103 104x4
    These are two numbers: 102x42x103 and 104x4. I am assuming "x" means multiplication, but it is not clear what operator is between these numbers.

    Quote Originally Posted by BadatMaths View Post
    The answer is 40, apparently. But I have no idea how to get to it or what this has to do with indices?
    An index (usually) is just an ordinal number (such as "first," "second," etc.). You probably need to give us more context to the question.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Jul 2012
    From
    UK
    Posts
    2

    Re: Question on Indices??

    Quote Originally Posted by emakarov View Post
    These are two numbers: 102x42x103 and 104x4. I am assuming "x" means multiplication, but it is not clear what operator is between these numbers.

    An index (usually) is just an ordinal number (such as "first," "second," etc.). You probably need to give us more context to the question.
    That is all there is, it is question 27 on the British Army Technical Selection Test sample.

    Technical Selection Test - British Army Website
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor
    Joined
    Oct 2009
    Posts
    5,546
    Thanks
    780

    Re: Question on Indices??

    Hmm, I agree, this is puzzling. In fact, the next question, titled "Precedence," says, "Compute the following: 8-6(4+3)2." The options are -17, -2, 1, 2 and 7, and the correct one is apparently -17. WolframAlpha disagrees.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Indices Question
    Posted in the Algebra Forum
    Replies: 2
    Last Post: November 24th 2010, 02:45 AM
  2. Indices question.
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: July 28th 2010, 03:43 PM
  3. Indices question!
    Posted in the Algebra Forum
    Replies: 5
    Last Post: July 18th 2010, 02:25 PM
  4. Indices Question.
    Posted in the Algebra Forum
    Replies: 3
    Last Post: January 13th 2009, 06:39 AM
  5. indices question
    Posted in the Number Theory Forum
    Replies: 0
    Last Post: June 17th 2008, 03:43 AM

Search Tags


/mathhelpforum @mathhelpforum