# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 169 - 177 of 1040

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## Question number: 169

Edit
MCQ▾

### Question

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 number: 170

Edit
MCQ▾

### Question

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

## Question number: 171

Edit
MCQ▾

### Question

Find the value of .

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 172

Edit
MCQ▾

### Question

If = 5, then = ________.

### Choices

Choice (4) Response

a.

100

b.

400

c.

144

d.

169

## Question number: 173

Edit
True-False▾

### Is the Following Statement True or False?

Square root of a negative numbers are imaginary number. This statement is________

## Question number: 174

Edit
MCQ▾

### Question

A number is multiplied by itself and then 72 is subtracted from the product. If the final result is 5928, then find the original number.

### Choices

Choice (4) Response

a.

36

b.

62

c.

60

d.

50

## Question number: 175

Edit
MCQ▾

### Question

If , then the value of is________.

### Choices

Choice (4) Response

a.

3

b.

4

c.

5

d.

2

## Question number: 176

Edit
MCQ▾

### Question

Find the smallest square number which is exactly divisible by 5 6,9 and 12 is, ________

### Choices

Choice (4) Response

a.

500

b.

180

c.

100

d.

900

## Question number: 177

Edit
MCQ▾

### Question

Square root of 6084 is________.

### Choices

Choice (4) Response

a.

76

b.

78

c.

87

d.

77