Find the probability that troy loses 2 matches before they

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Greta and Troy are playing chess. Greta is a poor sport and will stop playing as soon as she loses 3 chess matches. Suppose that the outcomes of the chess matches are independent and that the probabiliy that Greta wins any match is .7.

a) Find the probability that Troy loses 2 matches before they stop playing.

b) Find the expected number of matches Troy loses before they stop playing.

Reference no: EM13642007

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