If the matrix AB is zero, then _________.
A = 0 or B = 0
A = 0 and B = 0
It is not necessary that either A = 0 or B should be 0
All the above statements are wrong
A square matrix A is singular if _______.
| A |≠ 0
| A | = 0
| A | = 1
A | ≠1
If A is a squre matrix, then A - A' is _____________.
Unit matrix
Null matrix
A
skew symmetric matrix
If matrix contain 13 elements. Write the possible order of the matrix
2 × 3
13 × 2
1 × 13
6× 2
If A and B are symmetric matrices of order n, then ________.
A + B is skew symmetric
A + B is symmetric
A+ B is a diagonal matrix
A + B is a zero matrix
The number of all possible matrices of order 3 × 3 with each entry 0 or 1 is
27
18
81
512
A matrix is _______.
A collection of real numbers
A collection of real or complex numbers
An array of real numbers
An array of real or complex numbers
If A = [aij]mxn is a square matrix if
m < n
m > n
m = n
None of these
Then 3 A - 4 B =
A column matrix has only ____________.
One element
One row with one or more columns
One column with one or more rows
One row and one column
