# NDA (National Defense Academy) Mathematics: Questions 239 - 245 of 384

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## Question number: 239

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MCQ▾

### Question

If the sequence is a geometric progression and then what is the value of ?

### Choices

Choice (4)Response

a.

3

b.

1

c.

5

d.

Cannot be determined

## Question number: 240

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Appeared in Year: 2012

MCQ▾

### Question

The angle of elevation of the tip of a flag staff from a point due south of its base is . What is the height of the flagstaff corrects to the nearest meter.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 241

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MCQ▾

### Question

What is the value of ?

### Choices

Choice (4)Response

a.

b.

0

c.

d.

## Question number: 242

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Appeared in Year: 2012

MCQ▾

### Question

If the latus rectum of an ellipse is equal to half of the minor axis, then what is its eccentricity?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 243

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MCQ▾

### Question

The geometric mean and harmonic mean of two non-negative observations are and respectively. Then what is the arithmetic mean of the observation equal to:

### Choices

Choice (4)Response

a.

32.5

b.

33.3

c.

34

d.

32

## Question number: 244

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Appeared in Year: 2012

MCQ▾

### Question

What is the distant between the lines and ?

### Choices

Choice (4)Response

a.

Units

b.

0

c.

Units

d.

Units

## Question number: 245

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Appeared in Year: 2016

MCQ▾

### Question

If both the roots of the equation lie between then which one of the following is correct?

### Choices

Choice (4)Response

a.

b.

c.

d.

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