1. Which of the following is not true regarding the linear programming formulation of a transportation problem?
Costs appear only in the objective function.
The number of variables is (number of origins) x (number of destinations).
The number of constraints is (number of origins) x (number of destinations).
The constraints’ left-hand side coefficients are either 0 or 1.
2. In a transshipment problem, shipments
cannot occur between two origin nodes.
cannot occur between an origin node and a destination node.
cannot occur between a transshipment node and a destination node.
can occur between any two nodes.