# Thread: +rep to the first

1. ## +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. /is tempted, but lazy.

good luck :3!

3. Originally Posted by Cara
/is tempted, but lazy.

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

4. 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. Originally Posted by john
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. Tempted to do but... g2 pay attention to the class lol -.-

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

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

9. 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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