# NDA (National Defence Academy) Mathematics: Questions 241 - 246 of 384

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## 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

Edit
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.

## Question number: 246

Edit

Appeared in Year: 2012

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.

4

b.

25

c.

12.5

d.

9