Come every Monday, something will puzzle you. Come every Monday, something will challenge you. Come every Monday, something will sound interesting. Come every Monday, the beauty of the random world will engage you!
So, come every Monday.

Monday, March 29, 2010

Monday Probability 12: Red before Blue and Green

An urn has 10 red, 20 blue and 30 green balls. We start to withdraw balls without replacement. What is the probability of all reds coming out before atleast one blue and one green?

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