Operational Research Final Exam
Questions With Correct Answers
True - ANSWERSThe main components of a decision model include the decision
alternatives, the constraints, and the objective criterion.
True - ANSWERSThe most important step toward solving a decision problem is the
construction of an adequate model.
True - ANSWERSA typical decision problem must have at least two decision
alternatives.
False - ANSWERSThe number of alternatives in a decision problem is typically finite.
False - ANSWERSA decision problem that has an infinite number of alternatives is
usually unsolvable.
True - ANSWERSA feasible alternative in a decision model must satisfy all the
restrictions of the problem.
False - ANSWERSAn optimum solution is the best solution in terms of the objective
criterion among all the feasible and infeasible alternatives of the model.
True - ANSWERSThe more restrictions we add to the decision model, the more likely
that we worsen the optimum value of the objective criterion.
True - ANSWERSMost mathematical OR models are solved by using iterative
procedures.
True - ANSWERSHeuristic procedures do not guarantee the attainment of an optimum
solution.
True - ANSWERSHeuristics can be used to find a good starting solution and hence lead
to a faster attainment of the optimum solution of a mathematical model.
True - ANSWERSThe proportionality property in LP is not satisfied when the per unit
contribution of a variable in the objective function is dependent on the value of the
variable.
False - ANSWERSIn an LP model, replacing <= or >= by = in the constraints can
improve the value of the objective function.
Questions With Correct Answers
True - ANSWERSThe main components of a decision model include the decision
alternatives, the constraints, and the objective criterion.
True - ANSWERSThe most important step toward solving a decision problem is the
construction of an adequate model.
True - ANSWERSA typical decision problem must have at least two decision
alternatives.
False - ANSWERSThe number of alternatives in a decision problem is typically finite.
False - ANSWERSA decision problem that has an infinite number of alternatives is
usually unsolvable.
True - ANSWERSA feasible alternative in a decision model must satisfy all the
restrictions of the problem.
False - ANSWERSAn optimum solution is the best solution in terms of the objective
criterion among all the feasible and infeasible alternatives of the model.
True - ANSWERSThe more restrictions we add to the decision model, the more likely
that we worsen the optimum value of the objective criterion.
True - ANSWERSMost mathematical OR models are solved by using iterative
procedures.
True - ANSWERSHeuristic procedures do not guarantee the attainment of an optimum
solution.
True - ANSWERSHeuristics can be used to find a good starting solution and hence lead
to a faster attainment of the optimum solution of a mathematical model.
True - ANSWERSThe proportionality property in LP is not satisfied when the per unit
contribution of a variable in the objective function is dependent on the value of the
variable.
False - ANSWERSIn an LP model, replacing <= or >= by = in the constraints can
improve the value of the objective function.
