IMO Mathematics Olympiad Class 8: Questions 224  232 of 1029
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Question number: 224
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: 225
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: 226
Question
The value of is ________.
Choices
Choice (4)  Response  

a.  6 

b.  4 

c.  8 

d.  5 

Question number: 227
Question
The cube root of is________.
Choices
Choice (4)  Response  

a.  4 

b.  16 

c.  64 

d.  9 

Question number: 228
Question
If, then
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 

Question number: 229
Question
The cube of an even natural number is________.
Choices
Choice (4)  Response  

a.  Even or odd 

b.  Even 

c.  Can’t say 

d.  Odd 

Question number: 230
Question
The volume of a cube whose surface area is , is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 231
Question
=
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 232
Question
The cube of a number is 16 times of then find where
Choices
Choice (4)  Response  

a.  0 

b.  2 

c.  4 

d.  1 
