Posted by Ryan! on Sunday, February 28, 2010 at 1:55pm.
A bag contains 3 red chips, 2 blue chips, and 1 white chip. If 2 chips are chosen from the bag (without replaceent), determine the probability that they are of different colors.

probability  bobpursley, Sunday, February 28, 2010 at 2:34pm
ways to get two different colors
rb
rw
bw
br
wr
wb
add the probability of each of these.
I will do the first two:
Pr(rb)=3/6*2/5
Pr(rw)=3/6*1/5

probability  Ryan!, Sunday, February 28, 2010 at 2:40pm
ok but how do i find the final probability?
i see how i can get the probability of a certain combination, but i don't understand how i can find that end probability.

probability  Ryan!, Sunday, February 28, 2010 at 3:50pm
never mind i got it
thank you so much bobpursley!

probability  dave, Tuesday, May 7, 2013 at 3:47am
A bag contains 4 purple, 3 blue and 2 red cubes. Select 3 cubes and stack on table next to the bag. What is probability of the cubes being red, purple then blue
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