# NDA (National Defence Academy) Mathematics: Questions 193 - 197 of 384

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## Question number: 193

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Appeared in Year: 2012

MCQ▾

### Question

Which one of the following statements is correct?

### Choices

Choice (4) Response

a.

The derivative of a function at a point will exists if there is one tangent to the curve at that point and the tangent is not parallel to y-axis

b.

The derivative of a function at a point will exists if there is one tangent to the curve at that point and the tangent is parallel to y-axis

c.

The derivative of a function at a point will exists if there is one tangent to the curve at that point and the tangent is parallel to -axis

d.

Question does not provide sufficient data or is vague

## Question number: 194

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Appeared in Year: 2012

MCQ▾

### Question

If are two non-empty sets having elements in common, then what is the number in the sets

### Choices

Choice (4) Response

a.

b.

2n

c.

n

d.

Zero

## Question number: 195

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MCQ▾

### Question

What is the value of

### Choices

Choice (4) Response

a.

2/7

b.

0

c.

1/2

d.

1/9

## Question number: 196

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MCQ▾

### Question

The equation formed by multiplying each root of by is .

What is equal to?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 197

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MCQ▾

### Question

and are two matrices such that and then what is equal to?

### Choices

Choice (4) Response

a.

2

b.

1

c.

3

d.