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The expression n!/(n - 2)! simplifies to
An(n + 1)
Bn(n - 1)
Cn(n - 2)
D(n - 1)(n - 2)
Answer & Solution
Correct answer: B. n(n - 1)
n! = n(n - 1)(n - 2)!, so dividing by (n - 2)! leaves n(n - 1).
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