\[ P(n, r) = \frac{n!}{(n-r)!} \]
Here, \( n = 8 \) and \( r = 3 \).
\[ P(8, 3) = \frac{8!}{(8-3)!} = \frac{8 \times 7 \times 6}{1} = 336 \]
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