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Solution
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Solution provided by AtoZmath.com
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Permutation & combination - n! calculator
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1. Find `n!`
2. Find `(n!)/(m!)`
3. Find `{::}^nP_r`
4. Find `{::}^nC_r`
5. How many words can be formed from the letters of the word daughter?
6. How many ways a committee of players can be formed ?
7. Permutation, combination list
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Example1. Find `5 !`
`5! = 1 * 2 * 3 * 4 * 5=120`
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Formula
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`1. {::}^n P_r = (n!) / ((n-r)!)`
`2. {::}^n C_r = (n!) / ((r!) (n-r)!)`
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