Question # 1

A diagonal matrix is always

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Identity

Triangular

Scalar

Non-singular

The transport of a square matrix is a

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Row matrix

Column matrix

Square matrix

Null matrix

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3 x 1

1 x 3

3 x 3

1 x 1

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1, 2, 3

1, 5, 9

2, 5, 8

3, 6, 9

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5

-5

none

A square matrix A for which A^t= A is called a

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Column matrix

Symmetric matrix

Skew-symmetric matrix

Row matrix

In order of A is m x n and order of B is n x p then order of AB is

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m x m

n x n

m x p

p x m

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k3

0

3k

k6

For a square matrix A, if A = A^t, then A is called

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matrix

Transpose

Symmetric

Non-symmetric

A matrix in which the number of rows is not equal to the number of columns is called a

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Diagonal matrix

Rectangular matrix

Square matrix

Scalar matrix

The matrix A is Hermitian when (A)' =

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A

-A

A

A'

Matrix multiplication is

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Commutative

Not commutative

Not associative

Not distributive

A matrix with a single column is called

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Column matrix

Row matrix

Identity matrix

Null matrix

A square matrix A for which A^t= -A is called a

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Column matrix

Symmetric matrix

Skew-symmetric matrix

Row matrix

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0

abc

1/abc

None of these

If for the matrix A, A⁵= I, then A^-1=

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A²

A³

A

None of above

The transport of a null matrix is

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Row matrix

Column matrix

Square matrix

Null matrix

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Null matrix

Triangular matrix

Unit matrix

Rectangular matrix

Which of the following is skew symmetric matrix

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The square matrix A is skew-symmetric when At =

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-B

-C

-A

-D

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Hermitian matrix

Skew-hermitian matrix

Symmetric matrix

Identity matrix

Matrices A = [aij] 2 x 3 and B =[bij] 3 x 2 are suitable for

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BA

A²

AB

B²

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I

|A|

|A| I

None of these

The additive inverse of a matrix A is

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None of these

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I3

rI3

r

none

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a = -1/2, b = -1

a = 1, b = 2

a = 2, b = 3

None of above

Cofactor of an element a_ijis defined by

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(-1)^i+j|A|

(-1)^i+jM_ij

(-1)^i+jM^-1

None of these

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K/6

2K

3K

6K

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Zero matrix

Diagonal matrix

Column matrix

Scalar matrix

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