A community for students.
Here's the question you clicked on:
 0 viewing
ggrree
 4 years ago
I'm feeling a bit rusty with probabiliy. Could somebody quickly explain to me how to use permutations and combinations?
I understand what they mean, but I'm confused at what the xPy or the xCy notation means( where x and y are numbers.
ggrree
 4 years ago
I'm feeling a bit rusty with probabiliy. Could somebody quickly explain to me how to use permutations and combinations? I understand what they mean, but I'm confused at what the xPy or the xCy notation means( where x and y are numbers.

This Question is Closed

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[ \large xPy = ^xP_y = \frac{x!}{(xy)!} \] \[ \large xCy = ^xC_y = \frac{x!}{y! \times (xy)!} \] where \( x,y \in \mathbb{N} \)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0xPy: It means that there are (x) objects going into (y) categories, order matters (ie) (x) different cars competing for (y) places in a race: xPy xCy: It means there are (x) objects going into (y) categories, but order DOES NOT matter: ie) (x) different cars competing for (y) identical parking spots

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Just remember "Permutation" is counting the different ways something can "Permeate" so order matters. "Combination" is counting different ways to combine the same things so order does not matter.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0right ...switched this two

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1330816685116:dw
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.