SOLUTION: Determine wheter each situation involes a permutation or a combination arrrange of 15 DVD's on a shelf

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Question 746985: Determine wheter each situation involes a permutation or a combination

arrrange of 15 DVD's on a shelf
Found 2 solutions by jim_thompson5910, mikeebsc:
Answer by jim_thompson5910(35256) (Show Source):
You can put this solution on YOUR website!
Assuming order matters, you would use a permutation.

Answer by mikeebsc(26) (Show Source):
You can put this solution on YOUR website!
Yes, this is the ONLY differentiating factor between a permutation and a combination; that is , does order matter?
In a permutation, order matters.
In a combination, order does not matter.
Being that the problem says "arranging", this leads one to assume order matters, hence a permutation. If the problem had read "Place 15 DVD's on a shelf", order would not matter, therefore it would have been a combination.