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Two distinct integers, $x$ and $y$, are randomly chosen from the set $\{1,2,3,4,5,6,7,8,9,10\}$. What is the probability that $xy-x-y$ is even?
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Two distinct integers, $x$ and $y$, are randomly chosen from the set $\{1,2,3,4,5,6,7,8,9,10\}$. What is the probability that $xy-x-y$ is even?

User Terrymorse
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24 i really dont know what

User Jonathan Nielsen
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