Mathematics, 21.08.2019 20:30, Tnaaasty5901

Give a combinatorial proof of the following binomial identity. hint: you could, for example, argue why both sides count the number of ways to choose n balls from a bag containing n different red balls and n different green balls. (7) - ] : )

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Give a combinatorial proof of the following binomial identity. hint: you could, for example, argue...