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Omni-MATH / Consider a three-person game involving the following three types of fair…

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problem

Consider a three-person game involving the following three types of fair six-sided dice. - Dice of type AA have faces labelled 2,2,4,4,9,92,2,4,4,9,9. - Dice of type BB have faces labelled 1,1,6,6,8,81,1,6,6,8,8. - Dice of type CC have faces labelled 3,3,5,5,7,73,3,5,5,7,7. All three players simultaneously choose a die (more than one person can choose the same type of die, and the players don't know one another's choices) and roll it. Then the score of a player PP is the number of players whose roll is less than PP 's roll (and hence is either 0,1 , or 2 ). Assuming all three players play optimally, what is the expected score of a particular player?
Plain-text mathematical notation (without MathML)
Consider a three-person game involving the following three types of fair six-sided dice. - Dice of type A have faces labelled 2,2,4,4,9,9. - Dice of type B have faces labelled 1,1,6,6,8,8. - Dice of type C have faces labelled 3,3,5,5,7,7. All three players simultaneously choose a die (more than one person can choose the same type of die, and the players don't know one another's choices) and roll it. Then the score of a player P is the number of players whose roll is less than P 's roll (and hence is either 0,1 , or 2 ). Assuming all three players play optimally, what is the expected score of a particular player?
Original LaTeX notation
Consider a three-person game involving the following three types of fair six-sided dice. - Dice of type $A$ have faces labelled $2,2,4,4,9,9$. - Dice of type $B$ have faces labelled $1,1,6,6,8,8$. - Dice of type $C$ have faces labelled $3,3,5,5,7,7$. All three players simultaneously choose a die (more than one person can choose the same type of die, and the players don't know one another's choices) and roll it. Then the score of a player $P$ is the number of players whose roll is less than $P$ 's roll (and hence is either 0,1 , or 2 ). Assuming all three players play optimally, what is the expected score of a particular player?

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