There is a bag in front of me. I am told it contains 100 red balls or 50 red balls and 50 blue balls. If I pick n red balls from the bag and no blue balls what is the probability as a function of n (p(n)) that the bag contains 50 red balls and 50 blue balls. Of course, if n is greater than 50 then p(n)=0, but what about for n less than or equal to 50?!(adsbygoogle = window.adsbygoogle || []).push({});

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# Elementary probability problem I can't get my head round! Help!

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