# IMO- Mathematics Olympiad Class 9: Questions 72 - 79 of 919

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## Question number: 72

MCQ▾

### Question

If, then x is________.

### Choices

Choice (4) Response

a.

11

b.

44

c.

45

d.

176

## Question number: 73

MCQ▾

### Question

The ascending order of the surds is________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 74

MCQ▾

### Question

On simplifying , we get ________.

### Choices

Choice (4) Response

a.

4

b.

3

c.

2

d.

1

## Question number: 75

MCQ▾

### Question

1.654654……. . can be expressed in rational form as ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 76

MCQ▾

### Question

If both ‘a’ and ‘b’ are rational numbers, then ‘a’ and ‘b’ from , are ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 77

MCQ▾

### Question

The rationalizing factor of is ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 78

MCQ▾

### Question

If then the value of

### Choices

Choice (4) Response

a.

5

b.

2

c.

20

d.

11

## Question number: 79

MCQ▾

### Question

If , then N equals________.

### Choices

Choice (4) Response

a.

0.78

b.

c.

d.

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