Chapter 12 - Data Analysis and Probability - 12-6 Permutations and Combinations - Practice and Problem-Solving Exercises - Page 754: 22

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Use the formula of permutation: $_{n}$P$_{r}$=$\frac{n!}{(n-r)!}$. Plug in 11 for N and 0 for R: $_{n}$P$_{r}$=$\frac{n!}{(n-r)!}$ $_{11}$P$_{0}$=$\frac{11!}{(11-0)!}$ -simplify- $_{11}$P$_{0}$=$\frac{11!}{11!}$ -write using factorial- $_{11}$P$_{0}$=$\frac{1}{1}$ -simplify- $_{11}$P$_{0}$=1