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Math Help - How to tell if set of numbers add together to other set of number.

  1. #1
    Junior Member
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    How to tell if set of numbers add together to other set of number.

    Let A be a set of n integers and B be a set of K integers where n>k
    Is there a general method to find if the elements of A can be added together in some combination to 1 to 1 correspond to B.

    Example
    2 4 6 9 5
    4 8 14

    4= 4
    2+6=8
    5+9=14
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  2. #2
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    Joined
    Jul 2011
    Posts
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    Re: How to tell if set of numbers add together to other set of number.

    Quote Originally Posted by bob000 View Post
    Let A be a set of n integers and B be a set of K integers where n>k
    Is there a general method to find if the elements of A can be added together in some combination to 1 to 1 correspond to B.

    Example
    2 4 6 9 5
    4 8 14

    4= 4
    2+6=8
    5+9=14

    I think this is too general: for example, if an element of B is greater than the sum of all the elements of A, or if all the elements of A are even and one element of B is odd, then you won't
    succeed to do it. Also, if all the elements of A are positive and some element of B is less than the smallest element of A you cannot do it.
    Nemesis
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