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Permutation or derivation

How many different selections of 3 cards can be made from 12 face cards? Combination or permutation and why?

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.

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