9000140504

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Project ID: 
9000140504
Accepted: 
1
Clonable: 
0
Easy: 
0
Simplify for \(n\in \mathbb{N}\), \(n\geq 2\). \[ \frac{n\cdot (n - 2)!} {(n - 1)\cdot n!} \]
\(\frac{1} {(n-1)^{2}} \)
\(\frac{(n^{2}-2n)!} {(n^{2}-n)!} \)
\(\frac{n+1} {n-1}\)
\(\frac{(n-2)!} {(n-1)!}\)