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Chapter 1 – Matrices And Determinants Multiple Questions and Answers.
| 36. | The idea of matrices was introduced by Arthur Caylet in | ||
| A. | 18th century | ||
| B. | 19th century | ||
| C. | 20th century | ||
| D. | 21st century | ||
| 37. | A square matrix in which all the elements except at least the one element in the diagonal are zeros is said to be a | ||
| A. | identical matrix | ||
| B. | null/zero matrix | ||
| C. | column matrix | ||
| D. | diagonal matrix | ||
| 38. | A square or a rectangular array of numbers written within square brackets in a definite order in rows and columns is known as | ||
| A. | formula | ||
| B. | determinant | ||
| C. | matrix | ||
| D. | equation | ||
| 39. | If A(BC) = (AB)C, then with respect to multilpication this law is called | ||
| A. | Inverse law | ||
| B. | associative law | ||
| C. | cramers law | ||
| D. | additive law | ||
| 40. | In matrices (AB)−1 equals to | ||
| A. | A−1 | ||
| B. | B−1 | ||
| C. | A−1 B−1 | ||
| D. | B - 1 A - 1 | ||
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