IMO Level 1 Mathematics Olympiad (SOF) Class 8: Questions 127  136 of 1040
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Question number: 127
Question
Find the smallest square number which is exactly divisible by 15,25, and 30 is, ________
Choices
Choice (4)  Response  

a.  500  
b.  180  
c.  100  
d.  900 
Question number: 128
Question
The value of is________.
Choices
Choice (4)  Response  

a.  0  
b. 
 
c. 
 
d. 

Question number: 129
Question
If , then equals________.
Choices
Choice (4)  Response  

a.  4  
b.  1  
c.  3  
d.  2 
Question number: 130
Question
The value of is________.
Choices
Choice (4)  Response  

a.  2  
b. 
 
c. 
 
d.  Both b. and c. are correct 
Question number: 131
Question
The least two digit number, which is a perfect square is ________
Choices
Choice (4)  Response  

a.  4  
b.  16  
c.  12  
d.  9 
Question number: 132
Question
Find the smallest square number which is exactly divisible by 8,12,15, and 20 is, ________
Choices
Choice (4)  Response  

a.  180  
b.  2500  
c.  900  
d.  3600 
Question number: 133
Question
Which of the following is not a perfect square?
Choices
Choice (4)  Response  

a.  12544  
b.  23457  
c.  100489  
d.  5329 
Question number: 134
Question
If , then the value of is________.
Choices
Choice (4)  Response  

a.  5  
b.  4  
c.  8  
d.  2 
Question number: 135
Question
If , then the value of is________.
Choices
Choice (4)  Response  

a.  7  
b.  4  
c.  3  
d.  5 
Question number: 136
Question
A number is multiplied by half of itself and then 10 is added to the product. If the final result is 82, then find the original number.
Choices
Choice (4)  Response  

a.  14  
b.  13  
c.  11  
d.  12 