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Math Help - Combinatorics(Binomial Coefficients)?

  1. #1
    Super Member fardeen_gen's Avatar
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    Combinatorics(Binomial Coefficients)?

    Deduce that:
    {k\choose 0}{{n - 1}\choose {k - 1}} + {k\choose 1}{{n - 1}\choose {k - 2}} + {k\choose 2}{{n - 1}\choose {k - 3}} + \mbox{...}\ + {k\choose {k - 1}}{{n - 1}\choose 0} = {{n + k - 1}\choose {k - 1}}
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