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this is in probabilite
(we have n(n-1)(n-2).......(n-n+1)=A(n,n
=1*2............(n(n-1)(n-2
(and n!/0!=A(n,n
finaly 0!=1
To calculate the probabilities , and n!=(n+1)! / (n+1) .... It's simple.
It's simple <br class="Apple-interchange-newline"><div id="inner-editor"></div> 17/5000 Essayez avec cette orthographe : ç'est tout simple It's simple
n! = n*(n-1)!
n= 1
1! = 1*0!1 = 0!
