The members of University of cape Town Volleyball group are selling branded UCT caps from room to room in v green residence. The probability that this group will sell a set of caps (that is, atleast one cap) at any room they visit is 0.4 if they visited eight rooms in one night. i) Give the probability mass function of ? in a tabular form. (4) ii) Use the result in i) to find the mean and the variance of ?.

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