question_answer

Which of the following is not true for linear programming problems          [Kurukshetra CEE 1998]

A)                 A slack variable is a variable added to the left hand side of a less than or equal to constraint to convert it into an equality           

B)                 A surplus variable is a variable subtracted from the left hand side of a greater than or equal to constraint to convert it into an equality

C)                 A basic solution which is also in the feasible region is called a basic feasible solution         

D)                 A column in the simplex tableau that contains all of the variables in the solution is called pivot or key column