For the linear programming problem:

Maximize $$Z = 3X_1 + 2X_2$$

Subject to $$−2X_1 + 3X_2 ≤ 9$$ $$X_1 − 5 X_2 ≥ −20$$ $$X_1, X_2 ≥ 0$$

The above problem has

1. unbounded solution
2. infeasible solution
3. alternative optimum solution
4. degenerate solution