For some discrete random variable X. The probability mass functions (p.m.f) is given by: p(i) = c Find the following: E! where i=0,1, 2,.... Where c is a constant and λ is a positive value. a. The value of the constant c. b. P(X = 0) (probability of X is exactly 0). c. P(X > 1) (probability of X is at most 1).

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