|
Question for Goldust:
Purely for statistics purposes, if we were to arrange these possibilities then when do we know to multiply by r! or just r?
for example,
3-2-2 <--- you can only multiply by 3
3-1-3 <--- 3
4-1-2 <--- 3!
5-1-1 <--- 3
I understand why they're different when i write them out. But if i were faced with a more complicated arrangement i might not be able to discern which to multiply...
|