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Ken has a coin that has probability 1/5 of landing Heads. Mary has a coin that has probability 1/3 of landing Heads. They toss their

Ken has a coin that has probability 1/5 of landing Heads. Mary has a coin that has probability 1/3 of landing Heads. They toss their coins simultaneously, repeatedly. Let X be the number of tosses until Ken gets his first Heads. Let Y be the number of tosses until Mary gets her first Heads. Find: P( X = Y )

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