# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 197 - 203 of 931

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## Question 197

### Question

MCQ▾

In the given figure, three equilateral triangles have a common vertex then

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 198

### Question

MCQ▾

In the given figure, AB is a mirror, PQ is the incident ray and QR is the reflected ray. If ∠ PQR = 136˚, then ∠ PQA is ________

### Choices

Choice (4)Response

a.

24˚

b.

21˚

c.

26˚

d.

22˚

## Question 199

### Question

MCQ▾

If , then which of the following expressions holds?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 200

### Question

MCQ▾

If one leg of an isosceles right-angles triangle is increased by 6 cm and the other leg is increased by 4 cm, then change in area of the triangle is 24 sq. cm. find the length of the leg of the original triangle.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 201

### Question

MCQ▾

In the given figure, the value of y is ________

### Choices

Choice (4)Response

a.

10

b.

20

c.

24

d.

22

## Question 202

### Question

MCQ▾

In the given figure, , and , find

### Choices

Choice (4)Response

a.

55˚

b.

50˚

c.

45˚

d.

60˚

## Question 203

### Question

MCQ▾

Ray OE bisects ∠ AOB and OF is the ray opposite OE, then ∠ FOB = ________

### Choices

Choice (4)Response

a.

∠ BOE

b.

∠ FOE

c.

∠ AOE

d.

∠ FOA