Consider a puzzle, puzzle, where you start with a n x n matrix with a random allocation of three characters, x0 s, y 0 s, and z 0 s, in the grid locations. the goal of the puzzle is to remove the characters, one at a time, so that each row contains only characters of one letter, such as only x0 s, and each column contains at least one character. show that puzzle ∈ np.

Solution: the categorization of functional and non-functional requirement are as follows: some of the more typical functional requirements include: • business rules• transaction corrections, adjustments and cancellations• administrative functions• authentication• authorization levels• audit tracking• external interfaces• certification requirements• reporting requirements• historical data• legal or regulatory requirementswhile,some typical non-functional requirements are: • performance – for example response time, throughput, utilization, static volumetric• scalability• capacity• availability• reliability• recoverability• maintainability• serviceability• security• regulatory• manageability• environmental• data integrity• usability• interoperability

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