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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