The number of all possible matrices of order 3 × 3 with each entry 0 or 1 is
27
18
81
512
A square matrix A is singular if _______
| A | ≠ 0
| A | = 0
| A | = 1
| A | ≠1
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
If matrics AB = 0.
A = 0 or B = 0
A = 0 and B = 0
It is not necessary that A = 0 or B = 0
Above statements are wrong.
If A is ( aij ) m × n and B = ( bjk ) m × p, then order of AB is ___________.
m × n
m × p
p × m
A matrix A = ( aij ) m × n over the field of conmplex numbers is said to be be a reactangular matrix of ___________.
m = n
m ≠ n
m/n = 1
m - n = 0
Then 3 A - 4 B =
, then A2 is equal to
Unit matrix
Null matrix
A
-A
If A = [aij]mxn is a square matrix if
m < n
m > n
None of these
If A and B are matrices such that A + B and AB are defined, then.
It is not necessary that A and B are of the same size.
A and B are square matrices of the same order
No. of columns in A = no. of rows in B
