Question # 1

If A is matrix of order mxn then to get AB, the matrix B must be order of

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m x m

P x P

m x P

n x P

Any matrix "A" is a symmetric matrix if:

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A = -A

A = A^t

A = -A^t

A = A^-t

Cramer's rule is used to solve

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System of quadratic equation

System of linear equation

Any system of equation

None

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Any matrix "A" is a symmetric matrix if

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A = A

A = A^t

A = -A^t

A = A-I

A square matrix A is said to be singular if

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A + 0 is equal to:

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0

A

O + A

None of these

In binary system the base of the system is:

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2

5

8

10

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Equal

Possible

Not possible

Zero

I3 x | I₃ | = ?

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I₃

0

1

None of these

We cannot find the inverse of a:

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Square matrix

Diagonal matrix

Triangular matrix

Singular matrix

If A is a singular matrix then:

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A = 0

|A| = 0

A ≠ 0

|A| ≠ 0

A square matrix whose elements below the main diagonal are all zero is called.

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Upper triangular matrix

Lower triangular matrix

Rectangular

Row matrix

Do AB = BA?

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Never

Yes

May or may not

None of these

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