IMO Mathematics Olympiad Class 9: Questions 842  848 of 919
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Question number: 842
» Analytical Reasoning and Logical Reasoning
Question
B is the brother of R. J is sister of R. A is brother of B. How is R related to A?
Choices
Choice (4)  Response  

a.  Brother  
b.  Sister  
c.  Brother or Sister  
d.  None of the above 
Question number: 843
Question
If and , then value of is________.
Choices
Choice (4)  Response  

a.  770  
b.  115  
c.  227  
d.  555 
Question number: 844
Question
The median of the observation 2, 1, 12, 29, 25, 12, 10, 4, 5 is ________
Choices
Choice (4)  Response  

a.  12  
b.  25  
c.  15  
d.  10 
Question number: 845
Question
A man purchased two clocks P and Q at a total cost Rs. 800. He sells P at profit and Q at a loss of and gets the same selling price for both the clocks. What are the purchasing prices of P and Q respectively?
Choices
Choice (4)  Response  

a.  Rs. 275, Rs. 425  
b.  Rs. 266.67, Rs. 533.33  
c.  Rs. 250.65, Rs. 200.22  
d.  Rs. 360, Rs. 850 
Question number: 846
Question
The mean of 24 observations is 35. If the mean of the first 12 observations is 31 and that of the last 12 observations is 38, then the 12^{th} observation is ________
Choices
Choice (4)  Response  

a.  14  
b.  15  
c.  11  
d.  12 
Question number: 847
» Analytical Reasoning and Logical Reasoning
Question
Choose the correct alternative that will continue the same pattern. 6, 11, 21, 36, 56, (…. . )
Choices
Choice (4)  Response  

a.  51  
b.  81  
c.  91  
d.  42 
Question number: 848
» Linear Equations in Two Variables
Question
Which equation satisfies the data in the table?
X

3

5

7

9

Y

2

4

6

8 
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
