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smartmonkey
- Newbie | Next Rank: 10 Posts
- Posts: 1
- Joined: Fri Oct 10, 2008 11:15 pm
- Location: Seattle
1) Given a bag of R red, G green and B blue marbles (N marbles total). What is the probability to pick at least one red and one green marble when randomly pulling out 5 marbles without replacement?
2) Given the same bag, what is the probability to get at least one red, one green and no blue marbles when randomly pulling out 5 marbles without replacement?
My first attempt was trying (RC5)(GC4)/NC5 but that seemed way off...
2) Given the same bag, what is the probability to get at least one red, one green and no blue marbles when randomly pulling out 5 marbles without replacement?
My first attempt was trying (RC5)(GC4)/NC5 but that seemed way off...
