## Related questions with answers

Question

Compute each. Assume the values of the variables are restricted so that the expressions are defined.

$\frac { ( n - 1 ) ! } { ( n + 1 ) ! }$

Solution

VerifiedStep 1

1 of 2$\dfrac{(n-1)!}{(n+1)!}=\dfrac{(n-1)!}{(n+1)*n*(n-1)!}=\dfrac{1}{n*(n+1)}$

Use the fact that (n+1)!=(n+1)*n*(n-1)! to help with the simplification.

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