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196 Mathematics 2. A square matrix whose determinant value is zero is called . (a) Non-singular matrix (b) Singular matrix (c) Null matrix (d) None of above 3. The inverse of matrix can be obtained only when . (a) A is a square matrix (b) A is singular matrix (c) A is non-singular matrix (d) None of above 4. If A is a non-singular square matrix, then . (a) A·(adjoint of A) = I (b) A·(adjoint of A) =  (c) A·(adjoint of A) = A  I (d) None of above 2 1 0 . 5. Transpose of matrix 6 2 2 is 8 1 1   2 1 0  2 6 8 (a) 6 2 2 (b) 1 2 1 8 1 1 0 2 1  4 2 0 (d) None of above (c) 12 4 4 16 2 2 Answers: 1. (a), 2. (b), 3. (c), 4. (c), 5. (b) 11.12 References References of this unit have been given at the end of the book. CU IDOL SELF LEARNING MATERIAL (SLM)

References 197 REFERENCES 1. Seymour Lipschutz, Marc Lars Lipson, “Discrete Mathematics”, Publisher: McGraw Hill Education (India) Private Limited. 2. J.K. Sharma, “Discrete Mathematics”, Publisher: MacMillan India Limited. 3. K. Chandrasekhara Rao, “Discrete Mathematics”, Publisher: Narosa Publishing House. 4. Dr. Abhilasha S. Magar, “Applied Mathematics – I”, Publisher: Himalaya Publishing House. 5. Dr. Abhilasha S. Magar, “Business Mathematics”, Publisher: Himalaya Publishing House. 6. Dr. Abhilasha S. Magar, “Quantitative Methods – II”. Publisher: Himalaya Publishing House. 7. Dr. B.S. Grewal, “Higher Engineering Mathematics”, Publisher: Khanna Publishers, Delhi. 8. Mr. K.A. Stroud, “Engineering Mathematics”, Publisher: The MacMillan Press Ltd., London, Basingstoke. 9. Mr. P.N. Wartikar, “Textbook of Applied Mathematics”, Publisher: Pune Vidyarthi Griha Prakashan. CU IDOL SELF LEARNING MATERIAL (SLM)