i have a bag of 6 black balls and 14 white balls. What is the probability of getting 3 black balls out?
Last edited by mr fantastic; Dec 9th 2011 at 03:47 PM. Reason: Re-titled.
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An important data is missing: how many balls do You get out in total?... Kind regards
Originally Posted by chisigma An important data is missing: how many balls do You get out in total?... I addition to the above, we must know how the balls are drawn. Is it with replacement or without replacement?
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