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Matrices and Determinants MCQ

  1. If the order of matrix A is m x p. And the order of B is p x n. Then the order of AB is ?
    1. n x p
    2. m x p
    3. m x n
    4. n x m

  2. If A and B are matrices, then which from the following is true ?
    1. A + B  B + A
    2. (At)t  A
    3. AB  BA
    4. all are true

  3. What is a, if
    is a singular matrix ?
    1. 5
    2. 6
    3. 7
    4. 8

  4. If
    then |A| = ?
    1. 2
    2. 3
    3. 4
    4. 5

  5. If
    then order of matrix A = ?
    1. 2 x 2
    2. 2 x 3
    3. 3 x 2
    4. 3 x 3

  6. The number of non-zero rows in an echlon form is called ?
    1. reduced echlon form
    2. rank of a matrix
    3. conjugate of the matrix
    4. cofactor of the matrix

  7. (AB)t = ?
    1. BtAt
    2. AtBt
    3. AB
    4. BA

  8. The matrix
    is a ?
    1. symmetric
    2. skew-symmetric
    3. hermitian
    4. skew-hermitian

  9. If
    then |A| = ?
    1. 30
    2. 40
    3. 50
    4. 60

  10. The matrix
    is a ?
    1. scalar matrix
    2. identity matrix
    3. even matrix
    4. odd matrix
ANSWERS: Matrices and Determinants
  1. C
  2. C
  3. D
  4. B
  5. D
  6. B
  7. A
  8. A
  9. D
  10. A