# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 911 - 917 of 931

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## Question 911

### Question

MCQ▾

If show that = ________.

### Choices

Choice (4)Response

a.

2

b.

-1

c.

1

d.

0

## Question 912

### Question

MCQ▾

If (2,0) is a solution of the linear equation then the value of k is ________

### Choices

Choice (4)Response

a.

2

b.

5

c.

6

d.

4

## Question 913

### Question

MCQ▾

The mean of 18 observations is 30. If the mean of the first 8 observations is 25 and that of the last 10 observations is 34, then the 8th observation is ________

### Choices

Choice (4)Response

a.

70

b.

58

c.

66

d.

68

## Question 914

MCQ▾

If and then

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 915

### Question

MCQ▾

According to Euclid, a Line has________

### Choices

Choice (4)Response

a.

No length, no breadth and no thickness

b.

Length but no breadth and thickness

c.

Thickness but no breadth and length

d.

Breadth but no length and thickness

## Question 916

### Question

MCQ▾

Mayur bought pencil at ₹ 3 each and y getting cards at 90 paise each. If the pencil cost ₹ 15 more than the cards, the equation involving x and y are ________

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 917

### Question

MCQ▾

Raj starts from his office facing west and walks 100 meters straight, then takes a right turn and walks 100 meters. Further, he takes a left turn and walks 50 meters. In which direction is Raj now from the starting point?

### Choices

Choice (4)Response

a.

North

b.

South-West

c.

North-West

d.

North-East