SOLUTION: This web site doesn't tell me how to do these problems with only variables. My question is nPn. First Iwrote it out to n! over (n-n)!. then I got n! over 1. Then what do I do. Is i

Algebra ->  Probability-and-statistics -> SOLUTION: This web site doesn't tell me how to do these problems with only variables. My question is nPn. First Iwrote it out to n! over (n-n)!. then I got n! over 1. Then what do I do. Is i      Log On


   



Question 295076: This web site doesn't tell me how to do these problems with only variables. My question is nPn. First Iwrote it out to n! over (n-n)!. then I got n! over 1. Then what do I do. Is is One? or is it n? i dont know what i did wrong.
Answer by Edwin McCravy(20086) About Me  (Show Source):
You can put this solution on YOUR website!
This web site doesn't tell me how to do these problems with only variables. My question is nPn. First Iwrote it out to n! over (n-n)!. then I got n! over 1. Then what do I do. Is is One? or is it n? i dont know what i did wrong.
nPn+=+n%21+=+n%2A%28n-1%29%2A%28n-2%29%2A%22...%22%2A3%2A2%2A1

0%21=1

nP0=1

nP1=n

Edwin