# Matrices and Determinants [NDA (National Defense Academy) Mathematics]: Questions 10 - 17 of 43

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## Question number: 10

» Matrices and Determinants » Adjoint and Inverse of a Square Matrix

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Appeared in Year: 2012

MCQ▾

### Question

If and then what is equal to?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 11

» Matrices and Determinants » Basic Properties of Determinant

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Appeared in Year: 2012

MCQ▾

### Question

Consider the following statement:

Every Zero matrix is a square matrix.

A matrix has numerical value.

A unit matrix is a diagonal matrix.

Which of the above statement is/are correct?

### Choices

Choice (4)Response

a.

Only

b.

Only

c.

d.

## Question number: 12

» Matrices and Determinants » Operations on Matrices Determinant of a Matrix

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MCQ▾

### Question

What is equal to?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 13

» Matrices and Determinants » Basic Properties of Determinant

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Appeared in Year: 2012

MCQ▾

### Question

What is the order of the product ?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 14

» Matrices and Determinants » Adjoint and Inverse of a Square Matrix

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MCQ▾

### Question

Equation , then find the adjoint matrix.

### Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

## Question number: 15

» Matrices and Determinants » Types of Matrices

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Appeared in Year: 2016

MCQ▾

### Question

If , then which of the following is/are correct?

Is a unit matrix.

Select the correct answer using the code given below:

### Choices

Choice (4)Response

a.

1 only

b.

c.

1 and 2

d.

2 only

## Question number: 16

» Matrices and Determinants » Operations on Matrices Determinant of a Matrix

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Appeared in Year: 2012

MCQ▾

### Question

If then what is the value of

### Choices

Choice (4)Response

a.

8

b.

4

c.

6

d.

5

## Question number: 17

» Matrices and Determinants » Adjoint and Inverse of a Square Matrix

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MCQ▾

### Question

If is a matrix of order and then what is

### Choices

Choice (4)Response

a.

1/100

b.

8/51

c.

1/144

d.

1/120

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