Question: Set-covering models such as the original Western Airlines model often have multiple optimal solutions. See how many alternative optimal solutions you can find. Of course,

Set-covering models such as the original Western Airlines model often have multiple optimal solutions. See how many alternative optimal solutions you can find. Of course, each must use three hubs because we know this is optimal. (Hint: Use various initial values in the decision variable cells and then run Solver repeatedly.)¹⁸

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