Question: A discrete random variable X has support X = {0, 1, 2, 3, 4, 5, 6}. At the points in X , the CDF of

A discrete random variable X has support X = {0, 1, 2, 3, 4, 5, 6}. At the points in X , the CDF of X has values F(x) = x(x + 1)/42. Find the PMF of X

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