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Math Help - Combinatorics.

  1. #1
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    Combinatorics.

    Hello.
    I have no experience with typing math onto the computer so excuse me in advanced.

    Let us denote N={1,2,3,...,n}
    We have a Family {Ai} 1<=i<=m non equal subsets of N with the property that for each i and j such that i != j , the sum of the values in the intersection of Ai and Bi, each one to the power of 3 is equal to L. note that this L is global for any i != j.
    show that m <= n.

    Thanks.
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  2. #2
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    anyone has a direction?
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