# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 173 - 181 of 1042

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## Question 173

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### Statement

True-False▾

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

## Question 174

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### Question

MCQ▾

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 175

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### Question

MCQ▾

If , then the value of is________.

### Choices

Choice (4)Response
a.3
b.4
c.5
d.2

## Question 176

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### Question

MCQ▾

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 177

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### Question

MCQ▾

Square root of 6084 is________.

### Choices

Choice (4)Response
a.76
b.78
c.87
d.77

## Question 178

Edit

### Question

MCQ▾

If = 4, then = ________.

### Choices

Choice (4)Response
a.123
b.100
c.144
d.169

## Question 179

Edit

### Question

MCQ▾

The greatest four digit number, which is a perfect square is ________.

### Choices

Choice (4)Response
a.9801
b.9805
c.9901
d.9900

## Question 180

Edit

### Question

MCQ▾

Which of the following is not a perfect square?

### Choices

Choice (4)Response
a.1638
b.16384
c.100489
d.5329

## Question 181

Edit

### Question

MCQ▾

A number is multiplied by itself and then 10 is subtracted from the product. If the final result is 590, then find the original number.

### Choices

Choice (4)Response
a.60
b.36
c.30
d.50