7 In addition to the core and the Shapley value, the stable set is an alternative solution concept for n-person games. A set I of imputations is called a stable set if each imputation in I is undominated and every imputation that is not in I is dominated by some member of I. Consider the three-person game in which all zero- and one-member coalitions have a characteristic function value of 0, and each two- and threeplayer coalition has a value of 1. Show that for this game

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= 1,0), (0,1), (0,) is a stable set.