# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 924 - 931 of 931

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## Question 924

### Question

MCQ▾

The measures of two complementary angles are represented by . What is the value of x?

### Choices

Choice (4)Response

a.

20

b.

10

c.

40

d.

30

## Question 925

### Question

MCQ▾

A cloth merchant has announced 20 % rebate in prices. If one needs to have a rebate of ₹ 400, then now many shirts each costing ₹ 800, he should purchase?

### Choices

Choice (4)Response

a.

30

b.

40

c.

20

d.

10

## Question 926

### Question

MCQ▾

If the perimeter of a rectangular garden plot is 400 meters. The length of a rectangular field is thrice its breadth, what is the length of field?

### Choices

Choice (4)Response

a.

145 m

b.

125 m

c.

100 m

d.

150 m

## Question 927

### Question

MCQ▾

The value of is ________.

### Choices

Choice (4)Response

a.

b.

c.

5

d.

## Question 928

### Question

MCQ▾

Two points with coordinate (2,3) , (6,3) and (-4,3) lie on a line, parallel to which axis?

### Choices

Choice (4)Response

a.

Y-axis

b.

X-axis

c.

Z-axis

d.

Question does not provide sufficient data or is vague

## Question 929

### Question

MCQ▾

In the figure, the value of x if PQ || ₹ , Also find x

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 930

### Question

MCQ▾

Let a and b be real numbers such that , and Find

### Choices

Choice (4)Response

a.

13

b.

10

c.

20

d.

16

## Question 931

### Question

MCQ▾

Find all the natural number n such that is a perfect Square.

### Choices

Choice (4)Response

a.

9

b.

20

c.

10

d.

11