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Math Help - Discrete Maths home due

  1. #1
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    Discrete Maths home due

    Dear Mr Maths Forum

    I am struggling with the following discrete maths questions I have tried but not sure whether it is correct. Can you please help. Desperate.

    Please see attached questions.


    Thanks

    Fortuna
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  2. #2
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    For #1]

    Hint: Expand 0=0^n = (1-1)^n as a binomial expansion.
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  3. #3
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    A group of 15 people is gathered together for a meeting.
    Show that at least 2 people must have the same number of acquaintances at the meeting.
    For #2. It can be done using graph theory. See the link below.
    http://www.mathhelpforum.com/math-he...ple-graph.html
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