Posted by Ryan on Sunday, November 29, 2009 at 7:59pm.
A box contains 6 red balls, 4 blue balls, and 2 green balls. Three balls are randomly drawn (without replacement) from the box. What is the probability that the three balls selected are all the same color?

Probability again  economyst, Monday, November 30, 2009 at 9:07am
follow the basic methodology that Drwls showed you in the previous post. Assume each color ball can be distinguished from each other. (e.g., name the green balls g1 and g2) First, the denominator. How many different ways can 3 balls from 12 be chosen. 12choose3 is 12!/3!(123)!
Now the numerator. How many different ways can 3 red balls be chosen from 6? Plus how many different ways can 3 blue balls be chosen from 4.
Take it from here.

Probability again  Ryan, Monday, November 30, 2009 at 7:24pm
im lost

Probability again  ali, Monday, July 30, 2012 at 2:52pm
A bag contains 5 yellow balls, 5 orange balls, 6 white balls and 6 red balls. Five balls are drawn and NOT replaced each time
Answer This Question
Related Questions
 statistics  A jar contains 2 red balls, 2 blue balls, 2 green balls and 1 ...
 statistics  A jar contains 2 red balls, 2 blue balls, 2 green balls and 1 ...
 math  A box contains 8 blue balls and 2 red balls. Three balls are selected ...
 stats  A box contains 10 red balls and 20 blue balls. Three balls are selected ...
 probability theory  3 students; A, B and C, are in a swimming race. A and B ...
 statistics  A jar contains 7 red balls, 5 green balls, 4 blue balls, and 3 ...
 statistics /pure maths  A box contains N identical balls of which 4 are Red, 3 ...
 Math  A bag contains 33 balls: 10 blue, 11 red, and 12 green. If a person will ...
 Math  A bag contains 33 balls: 10 blue 11 red and 12 green If a person will ...
 College Discrete  An urn contains n > 0 white balls and m > 0 black balls...
More Related Questions