Cube and Cube Roots (IMO Mathematics Olympiad Class 8): Questions 34  41 of 58
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Question number: 34
» Cube and Cube Roots
Question
The smallest number by which 225 must be multiplied so that the product is a perfect cube is________.
Choices
Choice (4)  Response  

a.  15 

b.  9 

c.  10 

d.  11 

Question number: 35
» Cube and Cube Roots
Question
The volume of a cube whose surface area is , is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 36
» Cube and Cube Roots
Question
If , then is equal to________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 37
» Cube and Cube Roots
Question
=
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 38
» Cube and Cube Roots
Question
If , then is equal to________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 39
» Cube and Cube Roots
Question
By what least number must 3125 be multiplied to make it perfect cube?
Choices
Choice (4)  Response  

a.  10 

b.  25 

c.  5 

d.  4 

Question number: 40
» Cube and Cube Roots
Question
Three numbers are in the ratio of 1: 2: 3. The sum of their cubes is 98784. The numbers are________.
Choices
Choice (4)  Response  

a. 


b.  10: 11: 12 

c.  15: 30: 45 

d.  6: 12: 18 

Question number: 41
» Cube and Cube Roots
Question
The value of is ________.
Choices
Choice (4)  Response  

a.  6 

b.  4 

c.  8 

d.  5 
