Chapter 11 - Further Topics in Algebra - Chapter 11 Test Prep - Review Exercises - Page 1083: 56

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$$\eqalign{ & P\left( {6,0} \right) \cr & {\text{Use the permutation formula }}P\left( {n,r} \right) = \frac{{n!}}{{\left( {n - r} \right)!}} \cr & {\text{ }}P\left( {6,0} \right) = \frac{{6!}}{{\left( {6 - 0} \right)!}} \cr & {\text{Evaluate and simplify}} \cr & {\text{ }}P\left( {6,0} \right) = \frac{{6!}}{{6!}} \cr & {\text{ }}P\left( {6,0} \right) = 1 \cr} $$