# IMO- Mathematics Olympiad Class 9: Questions 806 - 812 of 919

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 919 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

## Question number: 806

MCQ▾

### Question

Which number will replace the question mark?

### Choices

Choice (4) Response

a.

30

b.

26

c.

22

d.

24

## Question number: 807

MCQ▾

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 808

MCQ▾

### Question

The average of 9 numbers is 8. What should be added as 10th number to make the average 9?

### Choices

Choice (4) Response

a.

10

b.

72

c.

90

d.

18

## Question number: 809

MCQ▾

### Question

Two distinct ________ in a plane cannot have more than one point in common

### Choices

Choice (4) Response

a.

Lines and points

b.

Lines

c.

Points

d.

Question does not provide sufficient data or is vague

## Question number: 810

MCQ▾

### Question

The equation has________

### Choices

Choice (4) Response

a.

Only two solutions

b.

Only three solutions

c.

Only one solution

d.

Infinitely many solutions

## Question number: 811

MCQ▾

### Question

Which number should come in place of the question mark?

 14 18 12 5 3 5 5 7 ? 75 61 69

### Choices

Choice (4) Response

a.

7

b.

4

c.

9

d.

6

## Question number: 812

MCQ▾

### Question

In the figure , and, if , what is the length of ?

### Choices

Choice (4) Response

a.

6

b.

5

c.

3

d.

4

f Page