## College Algebra (10th Edition)

$P(6,2)=30$
Use the permutation formula to obtain $P(n,r)=\frac{n!}{(n-r)!}$ $P(6,2)=\frac{6!}{(6-2)!}=\frac{6!}{4!}=\frac{6\cdot5\cdot4!}{4!}=30$