The owner of a newspaper stand receives 50 copies of Al Ahram newspaper every morning. The number of copies sold, x, varies randomly according to the following probability distribution:

(a) Determine the probability that the owner will sell out completely.

(b) Determine the expected number of unsold copies per day.

(c) A single copy costs 50 cents and sells for $1.00. Unsold copies have no value. Determine the expected net income per day.

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ਤ> X X = p(x) = { 36, 3 ਤੇ X = 35, 36,..., 49 50, 51,..., 59 X = 60, 61,..., 70