# IMO- Mathematics Olympiad Class 9: Questions 80 - 87 of 919

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## Question number: 80

MCQ▾

### Question

Find the values of a and b if

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 81

MCQ▾

### Question

If , then ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 82

MCQ▾

### Question

can be expressed in rational form as ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 83

MCQ▾

### Question

If, then the value of x is________.

### Choices

Choice (4) Response

a.

1

b.

2

c.

4

d.

7

## Question number: 84

MCQ▾

### Question

If, then is ________.

### Choices

Choice (4) Response

a.

3

b.

2

c.

1

d.

4

## Question number: 85

MCQ▾

### Question

If , find the value of

### Choices

Choice (4) Response

a.

3

b.

5

c.

4

d.

0

## Question number: 86

MCQ▾

### Question

If , then p is________.

### Choices

Choice (4) Response

a.

77

b.

86

c.

78

d.

65

## Question number: 87

MCQ▾

### Question

The value of of is ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

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