Question: Given a random sample X, X2, X3 from the distribution with density function (1 x 1), I (x) = 1 / find the variance

Given a random sample X, X2, X3 from the distribution with density

Given a random sample X, X2, X3 from the distribution with density function (1 x 1), I (x) = 1 / find the variance of (X X) + (X X3) + (X3-X). 2

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