why is nPk "n!/(n-k)!" ?

i'm understanding that nPk = n*(n - 1)***(n - k + 1).

uhh...

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- February 1st 2013, 05:38 PMmikipermutation
why is nPk "n!/(n-k)!" ?

i'm understanding that nPk = n*(n - 1)***(n - k + 1).

uhh...

- February 1st 2013, 05:59 PMPlatoRe: permutation
- February 1st 2013, 06:46 PMmikiRe: permutation
thanks a lot !

i understod your reply meaning.

i try it!