Combination and permutation??
Posted: Thu Sep 15, 2011 3:31 pm
Can someone explain to me the key difference as to why the Combination and permutation formulas are different by n!
Combination=
C(n,r)=n!/(n-r)!
Permutation=
P(n,r)=n!/n!(n-r)!
Any help would be very beneficial for me.
Thanks and Regards
Andy Charles
Combination=
C(n,r)=n!/(n-r)!
Permutation=
P(n,r)=n!/n!(n-r)!
Any help would be very beneficial for me.
Thanks and Regards
Andy Charles