Quantcast probability? - XP Math - Forums
XP Math Home Sign Up FREE! | Sign In | Classroom Setup | Common Core Alignment PDF Version

Go Back   XP Math - Forums > Welcome > Off-Topic Discussion

Reply
 
Thread Tools Display Modes
Old 07-23-2007   #1
sweet_candy
Guest
 
Posts: n/a
Default probability?

A bag contains 5 red marbles, 7 blue marbles, and 10 green marbles. One marble is drawn at random. What is the probability that it will be either:a. red or green?b. blue or green?c. red or blue?
  Reply With Quote
Old 07-23-2007   #2
Blergh
Guest
 
Posts: n/a
Default

a. 15/22b. 17/22c. 12/22
  Reply With Quote
Old 07-23-2007   #3
nvn
Guest
 
Posts: n/a
Default

(a) 15/22(b) 17/22(c) 12/22
  Reply With Quote
Old 07-23-2007   #4
Jack Sparrow
Guest
 
Posts: n/a
Default

a) p(r U g) = p(r) + p(g) - p(r ^ g) p(r) = (5/22)*(4/21) p(g) = (10/22) p(r ^ g) = (5/22)*(10/21)*2proceed others same like this
  Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 03:35 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
XP Math