Results 1 to 3 of 3

Math Help - A problem that gives me problems

  1. #1
    Newbie
    Joined
    Jan 2013
    From
    Caribbean
    Posts
    5

    Exclamation A problem that gives me problems

    I came across this while doing extra research and I can't seem to get the answer... help me please

    Qu: Find as a sum of powers of 10, an odd, positive integer n, such that when ab is multiplied by n, the resulting number has 2k digits and the sum of its digits is divisible by k (where k is a positive integer)
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Senior Member
    Joined
    Mar 2008
    From
    Pennsylvania, USA
    Posts
    269
    Thanks
    37

    Re: A problem that gives me problems

    An odd number constructed from a sum of powers of ten requires an odd quantity (say, one) of the powers of ten to be 10^0=1, no?

    What is " ab"?
    Last edited by abender; January 13th 2013 at 02:24 PM.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Jan 2013
    From
    Caribbean
    Posts
    5

    Re: A problem that gives me problems

    ab is any number... the question is structured in such a way that you cannot substitute numbers into ab to prove the answer.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. two problems about invariant subspace problem
    Posted in the Advanced Math Topics Forum
    Replies: 2
    Last Post: April 28th 2012, 09:17 AM
  2. difficult HCF problem and lcm problems
    Posted in the Algebra Forum
    Replies: 1
    Last Post: December 12th 2011, 10:44 AM
  3. okay the last verify problem i have problems with
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: October 12th 2011, 08:34 PM
  4. Convergence Problem... Problems
    Posted in the Calculus Forum
    Replies: 3
    Last Post: April 22nd 2010, 12:46 PM
  5. Having trouble w/ 2 problems on my probability problem set
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: October 27th 2009, 07:21 PM

Search Tags


/mathhelpforum @mathhelpforum