Show that the number of terms in the multinomial expansion:ki=1(pi)nis n + k 1nNote that
Chapter 1, Problem 5(choose chapter or problem)
Show that the number of terms in the multinomial expansion:ki=1(pi)nis n + k 1nNote that the required answer is the number of unordered sets of size n chosenfrom a set of k distinct objects with repetition allowed [LIU 1968].
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