| 1 |
If A is a square matrix, then A + A<sup>t</sup> is: |
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| 2 |
If A = [a<sub>ij</sub>], B = [b<sub>ij</sub>] and AB = 0 then: |
- A. A = 0
- B. B = 0
- C. either A = 0 or B = 0
- D. A & B not necessarily zero
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| 3 |
If each element of a 3 × 3 matrix A is multiplied by 3, then the determinant of the resulting matrix is: |
- A. |A|<sup>3</sup>
- B. 27|A|
- C. 3|A|
- D. 9|A|
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| 4 |
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- A. singular
- B. non-singular
- C. rectangular
- D. null
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| 5 |
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- A. 3×3
- B. 3×2
- C. 2×1
- D. 2×3
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| 6 |
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- B. 1×3
- C. 3×3
- D. 1×1
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| 7 |
If A is a square matrix order 3 × 3 the |kA| equals: |
- A. k |A|
- B. k<sup>2</sup>|A|
- C. k<sup>3</sup> |A|
- D. k<sup>4</sup> |A|
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| 8 |
A matrix of order m×1 is called: |
- A. row matrix
- B. column matrix
- C. identity matrix
- D. scalar matrix
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| 9 |
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- A. ab - cd = 0
- B. ac - bd = 0
- C. ad - bc = 1
- D. ad - bc = 0
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| 10 |
The order of a matrix is shown by: |
- A.
- B. number of columns + number of rows
- C. number of rows × number of columns
- D. number of columns - number of rows
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