What is the probability that serana wins the game

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Serana plays a game in which she repeatedly tosses a biased coin that has probability 0.4 of landing heads up and 0.6 of landing tails up. She wins the game if heads appears at least 4 times before tails has appeared 6 times; otherwise she loses the game. What is the probability that Serana wins the game? (You may leave your answer as a summation.)

Reference no: EM132858267

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