A bag contains 4 red, 3 white, and 5 blue marbles. How many samples of 4 marbles can be drawn in whi

a bag contains 4 red, 3 white, and 5 blue marbles. How many samples of 4 marbles can be drawn in which 2 marbles are red and 2 marbles are blue
bobbi78
Asked May 17, 2010
Count them?
rrbb
rbrb
etc.

I assume you don't mean 'what is the probability of getting 2 reds and 2 blues in any order.'
ChrisC
Answered May 19, 2010

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