6. The transpose of a column matrix is a :
(a) null matrix
(b) row matrix
(c) scalar matrix
(d) column matrix
7. This matrix is a _______ .
(a) scalar matrix
(b) identity matrix
(c) diagonal matrix
(d) triangular matrix
8. This matrix is a _______ .
(a) scalar matrix
(b) identity matrix
(c) diagonal matrix
(d) triangular matrix
9. A matrix whose each element is zero is called a :
(a) null matrix
(b) scalar matrix
(c) identity matrix
(d) symmetric matrix
10. The transpose of a square matrix is a :
(a) null matrix
(b) row matrix
(c) square matrix
(d) column matrix
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