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Math Help - Permutation or Combination

  1. #1
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    Exclamation Permutation or Combination

    Can someone please tell me if this is a Permutation or Combination problem.

    How many groups of three kittens can you choose from a litter of seven?

    If its a combination that it would be 7!/3!4! which equals 35 right?
    If its a permutation that it would be 7! right?

    Thanks for any help you can give me!
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  2. #2
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    Quote Originally Posted by Mistersteve124 View Post
    Can someone please tell me if this is a Permutation or Combination problem.

    How many groups of three kittens can you choose from a litter of seven?

    If its a combination that it would be 7!/3!4! which equals 35 right?
    Correct
    If its a permutation that it would be 7! right?
    Now it shall be 7P3=7!/4!
    The 4 comes from 7-3.
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  3. #3
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    But which type of problem is it a combination or a permutation?
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  4. #4
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    Quote Originally Posted by Mistersteve124 View Post
    But which type of problem is it a combination or a permutation?
    It is a combination.
    When you choose 3 cats it makes no difference whether you select 1 black, 1 brown and 1 green cat. Or 1 brown 1 gree and 1 black is the same. See?
    Order is irrelevant, you will be assimilated.
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