2. Let X1 and X2 have the joint pmf p(11, 12) = 232, 21 = 1,2,3...

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2. Let X1 and X2 have the joint pmf p(11, 12) = 232, 21 = 1,2,3 and x2 = 1,2,3, zero elsewhere. Find the joint pmf of Y1 = X1

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2. Let X1 and X2 have the joint pmf p(11, 12) = 232, 21 = 1,2,3...

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