# Chapter 12 - Data Analysis and Probability - 12-7 Theoretical and Experimental Probability - Practice and Problem-Solving Exercises: 51

6

#### Work Step by Step

We know that: $_nP_r = \frac{n!}{(n-r)!}$ $_3P_3 = \frac{3!}{(3-3)!}$ $\frac{3!}{0!}= 3!$ We also know that: $x! = x(x-1)(x-2)...(1)$ Thus, we have: 6

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