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anonymous

  • one year ago

Well, I know what it's not.. Which of the following is an example of a combination? A. Selecting a first, second and third place winner at a beauty competition. B. Picking 4 sets of towels out of 20 different sets. C. The number of ways 12 picture frames can be arranged on a shelf. D. The number of ways 3 people can sit on a couch. ___ I know it cannot be option A because it is an example of a permutation. As for the others though, I have no idea.

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  1. misssunshinexxoxo
    • one year ago
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    C because a combination has multiple ways

  2. misssunshinexxoxo
    • one year ago
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    A combination is a way of selecting several things out of a larger group, where order does not matter.

  3. anonymous
    • one year ago
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    Thank you @misssunshinexxoxo :)

  4. anonymous
    • one year ago
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    That I knew, but I thought C and D were similar.

  5. misssunshinexxoxo
    • one year ago
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    It's a LARGE group

  6. anonymous
    • one year ago
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    Ah large. 3 is not large haha. thanks

  7. misssunshinexxoxo
    • one year ago
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    D is smaller having 3 people verses the picture frames

  8. misssunshinexxoxo
    • one year ago
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    Exactly!

  9. Vocaloid
    • one year ago
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    actually, I think B would be the better answer usually, when you arrange something in a row (like picture frames or people on a couch), the order matters

  10. misssunshinexxoxo
    • one year ago
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    B really wouldn't be good because picture frames and paintings have multiple combinations

  11. anonymous
    • one year ago
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    About B, I wasn't sure if it was that one or not because it says 'different' sets.

  12. Vocaloid
    • one year ago
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    for example, if we have three people, Ally Betty and Cathy sitting on a couch, then if Ally Betty and Cathy sit in the order ABC, it's different than the order BCA or ACB

  13. misssunshinexxoxo
    • one year ago
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    A combination is a way of selecting several things out of a "larger group", where order does not matter.

  14. Vocaloid
    • one year ago
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    remember: permutation: order matters combination: order doesn't matter

  15. misssunshinexxoxo
    • one year ago
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    B ONLY allows 4 SETS to be chosen out of 20

  16. anonymous
    • one year ago
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    That fact I got down. I just forgot about the 'large' group part.

  17. Vocaloid
    • one year ago
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    B is the better answer: if I pick 4 sets of towels, picking ABCD is the same as BCDA because it's the same 4 towels

  18. Vocaloid
    • one year ago
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    *the same 4 sets of towels

  19. misssunshinexxoxo
    • one year ago
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    C is the larger group

  20. Vocaloid
    • one year ago
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    group size has nothing to do with combination vs permutation

  21. anonymous
    • one year ago
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    hmm...

  22. Vocaloid
    • one year ago
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    well, maybe think about it this way: C and D are pretty much the same scenario with different numbers

  23. anonymous
    • one year ago
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    Okay, that's what I thought as well.

  24. Vocaloid
    • one year ago
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    alright, hopefully my explanation wasn't too confusing D:

  25. anonymous
    • one year ago
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    Not too hard to follow, thanks :)

  26. anonymous
    • one year ago
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    I just don't know now because D is just a larger version of C. And A says 'different' sets.

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