IMO Mathematics Olympiad Class 9: Questions 849  854 of 919
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Question number: 849
Question
Factors of
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 850
Question
In a mathematics test given to 15 students, the following marks (out of 100) is recorded: 45, 56, 78, 54, 75, 34, 68, 98, 87, 99, 90, 76, 55, 77, 68, then mean, median and mode of this data are respectively ________
Choices
Choice (4)  Response  

a.  60.67, 75, 65  
b.  70.67, 77, 68  
c.  70.67, 75, 68  
d.  55.26, 78, 65 
Question number: 851
Question
A man purchased two clocks A and B at a total cost Rs. 650. He sells A at profit and B at a loss of and gets the same selling price for both the clocks. What are the purchasing prices of A and B respectively?
Choices
Choice (4)  Response  

a.  Rs. 250, Rs. 400  
b.  Rs. 225, Rs. 425  
c.  Rs. 300, Rs. 350  
d.  Rs. 275, Rs. 375 
Question number: 852
Question
The sum of the xcoordinates of the intersection of and , is ________.
Choices
Choice (4)  Response  

a. 
 
b.  0  
c. 
 
d. 

Question number: 853
Question
Average of 10 numbers is 12. What should be added as 11^{th} number to make the average 13?
Choices
Choice (4)  Response  

a.  28  
b.  25  
c.  30  
d.  23 
Question number: 854
» Analytical Reasoning and Logical Reasoning
Question
Mathematics is related to numbers in the same way as history is related to ________
Choices
Choice (4)  Response  

a.  Dates  
b.  Events  
c.  Wars  
d.  People 