keldix
Jun 17, 2009, 01:03 PM
How many different selections of 3 cards can be made from 12 face cards? Combination or permutation and why?
Perito
Jun 17, 2009, 01:17 PM
Combinations of 12 things selected 3 at a time
\frac {12!}{(12-3)! \, 3!} = 220
The order of the cards is irrelevant. If you're dealt "King-Queen-Jack", you can rearrange it without changing your hand to "Jack-King-Queen". If the order were important, the 3! In the denominator would be removed.