An objective function Z=ax + by is maximum at points (8, 2) and (4, 6). If a ≥ 0 and b ≥ 0 and ab = 25, then the maximum value of the function is equal to:

Which of the following sets is not convex?

The number of Basic variables in any solution of Transportation problem with m-origins and n-destinations is

In a LLP degeneracy arises at