In 1972 Karp described the 21 NP-Complete problems [?]. In this problem, 5 of the 21 NP- Complete problems are to be completed. A description, example and solution is to be provided for the 5 selected complexity classes. In the description make sure you identify a problem, solution, mathematical description and pseudocode. The example should follow the description and contain a figure, table or diagram as appropriate to better explain your problem. In the solution a series of steps or verification should be provided.