Chapter 12 - Data Analysis and Probability - 12-6 Permutations and Combinations - Practice and Problem-Solving Exercises - Page 755: 50

6

Use the formula of permutation: $_{n}$P$_{r}$=$\frac{n!}{(n-r)!}$. Plug in 3 for N and 3 for R: $_{n}$P$_{r}$=$\frac{n!}{(n-r)!}$ $_{3}$P$_{3}$=$\frac{3!}{(3-3)!}$ -simplify- $_{3}$P$_{3}$=$\frac{3!}{0!}$ -write using factorial- $_{3}$P$_{3}$=$\frac{3*2*1}{1}$ -simplify- $_{3}$P$_{3}$=6