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[" Let the nine different letters "A,B,....

[" Let the nine different letters "A,B,....I in{1,2,3,...9}" then the probability that the "],[" product "(A-1)(B-2)...(I-9)" is a even number is "],[[" (1) "(1)/(9)," (2) "(2)/(9)],[" (3) "(5)/(9)," (4) "1]]

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