Cube and Cube Roots (IMO Mathematics Olympiad Class 8): Questions 9  17 of 58
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Question number: 9
» Cube and Cube Roots
Question
Find the value of .
Choices
Choice (4)  Response  

a.  30 

b.  50 

c.  31 

d.  70 

Question number: 10
» Cube and Cube Roots
Question
The value of is ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 11
» Cube and Cube Roots
Question
Two cubes have volume in the ratio 1: 125. The ratio of the area of the face of one to that of the other is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 12
» Cube and Cube Roots
Question
The value of is________.
Choices
Choice (4)  Response  

a.  14 

b.  10 

c.  15 

d.  12 

Question number: 13
» Cube and Cube Roots
Question
The smallest number by which 121 must be multiplied so that the product is a perfect cube is________.
Choices
Choice (4)  Response  

a.  11 

b.  8 

c.  9 

d.  10 

Question number: 14
» Cube and Cube Roots
Question
The smallest number by which 361 must be multiplied so that the product is a perfect cube is________.
Choices
Choice (4)  Response  

a.  15 

b.  10 

c.  19 

d.  11 

Question number: 15
» Cube and Cube Roots
Question
Three numbers are in the ratio of 5: 1: 3. The sum of their cubes is 9792. The numbers are________.
Choices
Choice (4)  Response  

a.  15: 30: 45 

b. 


c.  6: 12: 18 

d. 


Question number: 16
» Cube and Cube Roots
Question
The cube of an odd natural number is________.
Choices
Choice (4)  Response  

a.  Odd 

b.  Even 

c.  Even or odd 

d.  Can’t say 

Question number: 17
» Cube and Cube Roots
Question
If then the value of is________.
Choices
Choice (4)  Response  

a.  1 

b.  1.2 

c.  2 

d.  0.5 
