Suppose the joint probability density of X and Y is given by f(x, y) = {4xy (4xy 0 for 0 ≤ x ≤ 1,0 ≤ y ≤ 1 otherwise Find the probability P(X + Y≤ 0.5). O 0.0021 0.0104 O 0.0527 O 0.1667

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