Question: For some integer and constant , two discrete random variables have a joint PMF given by (a) Find the value of the constant in terms

For some integer and constant , two discrete random variables have a joint PMF given by
For some integer and constant , two discrete random variables

(a) Find the value of the constant in terms of L.
(b) Find the marginal PMFs, P M (m) and PN (n).
(c) Find Pr (M + N

m20, n 20, m + n

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