IMO Mathematics Olympiad Class 8: Questions 181  188 of 1029
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Question number: 181
Question
A number is multiplied by itself and then 10 is subtracted from the product. If the final result is 590, then find the original number.
Choices
Choice (4)  Response  

a.  60 

b.  30 

c.  50 

d.  36 

Question number: 182
Question
Three numbers are in the ratio of 4: 3: 2. The sum of their cubes is 21384. The numbers are________.
Choices
Choice (4)  Response  

a. 


b.  15: 30: 45 

c. 


d.  6: 12: 18 

Question number: 183
Question
If , then
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  Question does not provide sufficient data or is vague 

Question number: 184
Question
The value of is ________.
Choices
Choice (4)  Response  

a.  8.5 

b.  4.00 

c.  2.5 

d.  7.5 

Question number: 185
Question
If , then is equal to________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 186
Question
If , then the value of is________.
Choices
Choice (4)  Response  

a.  30.2 

b.  22.7 

c.  11.1 

d.  24.7 

Question number: 187
Question
The cube of a number is four times of then find where
Choices
Choice (4)  Response  

a.  4 

b.  2 

c.  1 

d.  0 

Question number: 188
Question
=
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

