[ ]
[ ] }
A+B+C, where C= [ ]. What is the value of?
(a) 7 (b) 8 (c) 5 (d) 2
If a matrix A is symmetric as well as anti-
symmetric, then which one of the following is
correct?
(a) A is a diagonal matrix (b) A is a null matrix
(c) A is a unit matrix (d) A is a triangular
matrix
If the matrix [
] is singular,
then what is the one of the values of?
(a)^ (b)^ (c) π (d) 0
- If A= [
], then which one of the
following is correct?
(a) A is symmetric matrix (b) A is anti-
symmetric matrix (c) A is singular matrix
(d) A is non-singular matrix
- If A is a square matrix such that A- =0,
then which one of the following is correct?
(a) A must be a null matrix (b) A must be a unit
matrix (c) A must be a scalar matrix (d) None
of the above - If A= 0 1 , where is cube root of unity,
then what is equal to?
(a) A (b) –A (c) Null matrix (d) Identity matrix
- If = |
| and ’= |
| then:
(a) =3 (b) (c) (d)
- From the matrix equation AB=AC, which
one of the following can be concluded?
(a) B=C for any matrix A (b) B=C, if A is
singular (c) B=C, if A is non-singular (d)
A=B=C for any matrix A
30. If is a cube root of unity, then
|
| is equal to:(a) (b) (c) (d)- A matrix X has (a+b) rows and (a+2)
columns and a matrix Y has (b+1) rows and
(a+3) columns. If both XY and YX exist, then
what are the values of a, b respectively?
(a) 3, 2 (b) 2, 3 (c) 2, 4 (d) 4, 3 - If sλ+t=
|
|, then the value of t is:(a) 16 (b) 18 (c) 17 (d) 19- If A is a non-null row matrix with 5 columns
and B is a non-null matrix with 5 rows, how
many rows are there in A×B?
(a) 1 (b) 5 (c) 10 (d) 25 - For non-zero a, b, c if
|
| then the value
of^ is equal to:
(a) abc (b) (c) –(a+b+c) (d) none of these- If A= 0 1 , then what is A (adj A) equal
to?
(a) 0 1 (b) 0 1 (c) 0 1 (d)
0 1 - If |
|=0, then a, b, c are
in:
(a) AP (b) GP (c) HP (d) none of these - If adj (A)= 0 1 and ab≠0, then what is
the value of | |?
(a) 1 (b) ab (c) √^ (d)