Question # 1

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3

-3

1/3

-1/3

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diagonal matrix

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zero

non-singular

singular

none of these

If AB = BA = I, then A and B are:

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equal to each other

multiplicative inverse of each other

additive inverse of each other

both singular

If A is a matrix of order m × n and B is a matrix of order n × p then the order of AB is:

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p×m

p×n

n×p

m×p

For a square matrix A, |A| equals:

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A^t

|A^t|

-|A^t|

-A^t

If each element of a 3 × 3 matrix A is multiplied by 3, then the determinant of the resulting matrix is:

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|A|³

27|A|

3|A|

9|A|

[0] is a:

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The additive inverse of a matrix A is:

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A

A^-1

- A

A²

If A is a square matrix order 3 × 3 the |kA| equals:

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k |A|

k²|A|

k³ |A|

k⁴ |A|

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3×2

2×3

2×2

3×3

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3×3

3×2

2×1

2×3

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diagonal matrix

Two matrices X and Y are equal if and only if:

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X and Y are of same order

Their corresponding elements are equal

Both a and b

None of these

The trivial solution of the homogeneous linear equations is:

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(1, 0, 0)

(0, 1, 0)

(0, 0, 1)

(0, 0, 0)

A matrix of order m×1 is called:

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row matrix

column matrix

identity matrix

scalar matrix

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If A is a matrix of order m × n, then the number of elements in each row of A is:

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m

n

m + n

m - n

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1

-5

-1

none

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1

-1

-6

6

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11th Class FA Mathematics Chapter 3 Online Test MCQs With Answers

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