# NDA (National Defence Academy) Mathematics: Questions 69 - 75 of 384

Access detailed explanations (illustrated with images and videos) to 384 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Subscription can be renewed yearly absolutely FREE! View Sample Explanation or View Features.

Rs. 250.00 or

How to register?

## Question number: 69

Edit
MCQ▾

What isequal to?

### Choices

Choice (4) Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

## Question number: 70

Edit

Appeared in Year: 2012

MCQ▾

### Question

Three Discs are thrown. What is the probability that the same number will appear on each of them?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 71

Edit
MCQ▾

### Question

If , then what is the value of ?

### Choices

Choice (4) Response

a.

1

b.

c.

d.

## Question number: 72

Edit
MCQ▾

### Question

What is the sum of the squares of direction cosines of the line joining the points ?

### Choices

Choice (4) Response

a.

b.

1

c.

0

d.

## Question number: 73

» Algebra » Complex Numbers » Modulus

Edit
MCQ▾

### Question

If , then what is the imaginary part of equal to?

### Choices

Choice (4) Response

a.

1

b.

0

c.

d.

## Question number: 74

Edit

Appeared in Year: 2012

MCQ▾

### Question

If and then what isequal to?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 75

Edit
MCQ▾

### Question

The angle of elevation of a tower at a level ground is . The angle of elevation becomes . when moved towards the tower. If the height of tower is , then what is equal to?

### Choices

Choice (4) Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague