# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 449 - 456 of 931

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## Question 449

### Question

MCQ▾

The and are right angles. If , and , then the length of XZ is ________

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 450

### Question

MCQ▾

If the point (5,7) lies on the graph of the equation , find the value of a.

### Choices

Choice (4)Response

a.

7

b.

8

c.

9

d.

6

## Question 451

### Question

MCQ▾

A rectangular field has its length and breadth in the ratio . Its area is 0.9 hectares. The cost of fencing it at ₹ . 10 per meter is ________

### Choices

Choice (4)Response

a.

₹ 5200

b.

₹ 6200

c.

₹ 4200

d.

₹ 7400

## Question 452

### Question

MCQ▾

In the figure , and . Then x equals ________

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 453

### Question

MCQ▾

If AD, BE and CF are the medians of a triangle ABC, then = ________.

### Choices

Choice (4)Response

a.

2

b.

1

c.

3

d.

0

## Question 454

### Question

MCQ▾

The edge of a cube is 25 cm. how many small cubes of 5 cm edge can be formed from this cube?

### Choices

Choice (4)Response

a.

125

b.

148

c.

180

d.

164

## Question 455

### Question

MCQ▾

The points in which abscissa and ordinate have same sign will lie in

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 456

### Question

MCQ▾

A covered wooden box has the inner measures as 95 cm, 120 cm, 30 cm and the thickness of wood is 7 cm. then the volume of the wood is________

### Choices

Choice (4)Response

a.

3,66, 400 cu. Cm

b.

3,64, 000 cu. Cm

c.

3,00, 664 cu. Cm

d.

6,64, 000 cu. Cm