Question

Evaluate

Answer 1

permutation?

Answer 2

\[\frac{ 9! }{ (9-4)! } = 3024\]

Answer 3

ha thanks :)

Answer 4

\[^nP_k=~_nP_k=\frac{n!}{(n-k)!}\]

Answer 5

\[_9P_k=\frac{9!}{(9-4)!}=\frac{9!}{5!}=\frac{9\times8\times7\times6\times5!}{5!}=9\times8\times7\times6=3024\]