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please help with the details 3. Let X and Y be two random variables with a joint pmf f (x, y) = xty ,x (

please help with the details

3. Let X and Y be two random variables with a joint pmf f (x, y) = xty ,x ( 10, 1, 2}, y E {0, 1, 2, 3}. 30 a. Find P(X = 1, Y = 2). b. Find P(X > 0, Y

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