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Thread: +rep to the first

  1. #1
    Dino Sherlockian
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    +rep to the first

    Person who can tell me all this shiz..

    I want to know how many 2 object combinations you can make with different things. Order does matter, but no doubles.
    Example:
    a b c
    ab
    ac
    ba
    bc
    ca
    cb

    Will you do it with..
    27..
    14..
    12..
    9..
    7..
    6..


    I need to wrap up the rest of something, and don't feel like doing this soo, yeah.

  2. #2
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    /is tempted, but lazy.

    good luck :3!

  3. #3
    Dino Sherlockian
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    Quote Originally Posted by Cara View Post
    /is tempted, but lazy.

    good luck :3!
    Yeah, I need it for my program, but I am sooo lazy lol

  4. #4

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    27..
    14..
    12..
    9..
    7..
    6..

    27 x14
    27 x 12
    27 x 9
    27 x 7
    27 x 6
    14 x 27
    14 x 12
    14 x 9
    14 x 7
    14 x 6
    12 x 27
    12 x 14
    12 x 9
    12 x 7
    12 x 6
    9 x 27
    9 x 14
    9 x 12
    9 x 7
    9 x 6
    7 x 27
    7 x 14
    7 x 12
    7 x 9
    7 x 6
    6 x 27
    6 x 14
    6 x 12
    6 x 9
    6 x 7

    i can do the math too if you want

  5. #5
    Dino Sherlockian
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    Quote Originally Posted by john View Post
    27..
    14..
    12..
    9..
    7..
    6..

    27 x14
    27 x 12
    27 x 9
    27 x 7
    27 x 6
    14 x 27
    14 x 12
    14 x 9
    14 x 7
    14 x 6
    12 x 27
    12 x 14
    12 x 9
    12 x 7
    12 x 6
    9 x 27
    9 x 14
    9 x 12
    9 x 7
    9 x 6
    7 x 27
    7 x 14
    7 x 12
    7 x 9
    7 x 6
    6 x 27
    6 x 14
    6 x 12
    6 x 9
    6 x 7

    i can do the math too if you want
    Uhm, I probably should have said, but I need it with like, 27 objects... And then another 14 objects and so on, But +rep for this.

  6. #6
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    Tempted to do but... g2 pay attention to the class lol -.-

  7. #7

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    i am not quite sure what you mean then. 27 x 1, 27 x 2, ect?

  8. #8
    Dino Sherlockian
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    Well it matters no more, I got my answers.

  9. #9
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    You seem to be looking for permuations. I know your question is answered, but this might be of help in the future:

    http://www.mathsisfun.com/combinator...mutations.html

    td;dr:

    n! / (n-r)! where n is the number of objects you have and r is how many you are going to choose

  10. The Following User Says Thank You to Miguel For This Useful Post:

    Ashleys165 (03-09-2012)

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