IMO Level 1 Mathematics Olympiad (SOF) Class 8: Questions 168  175 of 1040
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Question number: 168
Question
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 number: 169
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
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
Question
Find the value of .
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 172
Question
If = 5, then = ________.
Choices
Choice (4)  Response  

a.  100  
b.  400  
c.  144  
d.  169 
Question number: 173
Question
Is the Following Statement True or False?
Square root of a negative numbers are imaginary number. This statement is________
Question number: 174
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
Question
If , then the value of is________.
Choices
Choice (4)  Response  

a.  3  
b.  4  
c.  5  
d.  2 