# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 161 - 170 of 1042

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## Question 161

MCQ▾

If , then can be

### Choices

Choice (4)Response

a.

15

b.

12

c.

7

d.

13

## Question 162

### Question

MCQ▾

The area of a square field is sq. m. The length of each side of the field is ________.

### Choices

Choice (4)Response

a.

2.30

b.

2.50

c.

4.00

d.

1.92

## Question 163

MCQ▾

= ________

### Choices

Choice (4)Response

a.

13

b.

14

c.

15

d.

17

## Question 164

### Question

MCQ▾

If then value of is________.

### Choices

Choice (4)Response

a.

0.5

b.

0.5

c.

0.5

d.

0.5

## Question 165

### Question

MCQ▾

If , and value of then

### Choices

Choice (4)Response

a.

0

b.

1

c.

3

d.

2

## Question 166

### Question

MCQ▾

The number must be subtracted from 2329 to get a perfect square is________.

### Choices

Choice (4)Response

a.

15

b.

10

c.

25

d.

20

## Question 167

### Question

MCQ▾

Square root of is________.

### Choices

Choice (4)Response

a.

0.4

b.

0.5

c.

0.1

d.

0.2

## Question 168

### Question

MCQ▾

A number is multiplied by itself and then 6 is added to the product. If the final result is 175, then find the original number.

### Choices

Choice (4)Response

a.

13

b.

16

c.

12

d.

14

## Question 169

### Question

MCQ▾

A number is multiplied by half to itself and then 5 is subtracted from the product. If the final result is 123, then find the original number.

### Choices

Choice (4)Response

a.

12

b.

11

c.

16

d.

14

## Question 170

### Question

MCQ▾

The number must be subtracted from 6089 to get a perfect square is________.

### Choices

Choice (4)Response

a.

7

b.

8

c.

5

d.

18