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An urn contains 10 balls, 2 red, 5 blue, and 3 green balls. Take out 3...

An urn contains 10 balls, 2 red, 5 blue, and 3 green balls. Take out 3 balls at a random,
without replacement. You win $2 for each green ball you select and lose $3 for each red ball you
select. Let the random variable X denote the amount you win, determine the probability mass
function of X.

Math   Statistics-And-Probability   
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