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- 1. Multiple Choice
1. A matrix A is both symmetric and skew symmetric if A is
Null matrix
unit matrix
row matrix
none of these
- 2. Multiple Choice
If A and B are invertible matrix then (AB)-1 =
A-1B-1
AB
B-1A-1
none of these
- 3. Multiple Choice
If A is any invertible matrix then A is
square matrix
non singular matrix
both
none of these
- 4. Multiple Choice
1. Let A be a square matrix of order 3x3 then| kA| = .
k |A|
k2|A|
k3|A|
3k|A|
- 5. Multiple Choice
1. which of the following is correct
determinants is a square matrix
determinants is a number associated to a matrix
determinants is a number associated to a square matrix
none of these
- 6. Multiple Choice
If A is an invertible matrix of order 3 and |A|=5 then find |Adj A|
5
15
25
125
- 7. Multiple Choice
If A is square matrix of order 3 such that |AdjA| =64 , find |A|
64
8
4
192
- 8. Multiple Choice
If the order of matrix A is m×p. And the order of B is p×n. Then the order of matrix AB is
m × n
n × m
n × p
m × p
- 9. Multiple Choice
When you multiply a matrix by the identity matrix, you obtain the
inverse matrix.
transpose matrix.
Identity matrix
original matrix.
- 10. Multiple Choice
When you multiply a matrix by the inverse matrix, you obtain the
inverse matrix.
transpose matrix.
Identity matrix
original matrix.
- 11. Multiple Choice
Two matrices A and B are multiplied to get AB if
both are rectangular both have same order
no of columns of A is equal to columns of B
no of rows of A is equal to no of columns of B
no of columns of A is equal to no of rows of B
- 12. Multiple Choice
If |A| = 0, then A is
zero matrix
singular matrix
non-singular matrix
Identity matrix
- 13. Multiple Choice
2 and 1
-2 and -1
2 and -1
3 and 4
- 14. Multiple Choice
4
8
3
6
- 15. Multiple Choice
10
0
1
4
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