IMO Level 1 Mathematics Olympiad (SOF) Class 7: Questions 216  221 of 1022
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Question number: 216
Question
The number of girls in a class is 3 times the number of boys. Which of the following cannot be the total number of children in the class?
Choices
Choice (4)  Response  

a.  16  
b.  64  
c.  32  
d.  18 
Question number: 217
Question
The total cost of three prizes is Rs. 4440. If the value of second prize is of the first and the value of third prize is of the second prize, then the value of first prize is ________.
Choices
Choice (4)  Response  

a.  Rs. 1200  
b.  Rs. 1500  
c.  Rs. 1050  
d.  Rs. 1800 
Question number: 218
Question
A number is multiplied by 6. If 24 is subtracted from the product and difference is divided by 42, the result is equal to 10. The number is ________.
Choices
Choice (4)  Response  

a.  74  
b.  56  
c.  19  
d.  52 
Question number: 219
Question
5 is added to a number and the sum is multiplied by 5. If 25 is subtracted from the product and difference is divided by 8, the result is equal to 10. The number is ________.
Choices
Choice (4)  Response  

a.  10  
b.  19  
c.  16  
d.  14 
Question number: 220
Question
Savan is n years older than his sister is. His sister’s age is 19. What is their total age before 2 years?
Choices
Choice (4)  Response  

a.  years  
b.  years  
c.  years  
d.  years 
Question number: 221
Question
, then find the value of X.
Choices
Choice (4)  Response  

a.  8  
b. 
 
c.  1  
d. 
