This math topic focuses on finding the determinant of a 2x2 minor matrix derived from a 3x3 matrix, emphasizing matrix manipulation skills. Each problem asks for the determinant of a specific minor after excluding the row and column of a numbered element within a 3x3 matrix. Multiple choice answers are provided for each question, allowing practice in calculating and confirming correct determinants of minor matrices. This skill is crucial for students learning advanced algebra and serves as a fundamental aspect of matrices.