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Ratio of Consecutive Permutations
## Formula
$$\frac{{}^nP_{r+1}}{{}^nP_r}=n-r$$
Also:
$$\frac{{}^nP_r}{{}^nP_{r-1}}=n-r+1$$
## Usage
- Used to compare consecutive permutation values.
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Ratio of Consecutive Permutations
## Formula
$$\frac{{}^nP_{r+1}}{{}^nP_r}=n-r$$
Also:
$$\frac{{}^nP_r}{{}^nP_{r-1}}=n-r+1$$
## Usage
- Used to compare consecutive permutation values.
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