The random variables X and Y have ä joint Probability masS function as Follows - (X.Y); For ( X,Y) E A 18 for the other (x,Y) while A = {(x,Y ,2,3 and ysl,2} Depine: a The probability mass Function for bthe random variable V= X+ Y b) The probability mass Function For the random variable V= X-Y %3D 285

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