IMO Mathematics Olympiad Class 9: Questions 639  644 of 919
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Question number: 639
Question
Pointing to Saniya, Radhika says, “I am the daughter of the only son of his grandfather. ” How Radhika is related to Saniya?
Choices
Choice (4)  Response  

a.  Daughter  
b.  Niece  
c.  Mother  
d.  Sister 
Question number: 640
» Analytical Reasoning and Logical Reasoning
Statement
Should religion be taught in our schools?
Arguments
Choices
Choice (4)  Response  

a.  Either argument Ⅱ or argument Ⅲ is strong & only argument Ⅰ is strong.  
b.  Only argument Ⅱ is strong.  
c.  Either one of the arguments is strong.  
d.  Only argument Ⅰ is strong. 
Question number: 641
» Linear Equations in Two Variables
Question
A straight line parallel to the yaxis has equation________
Choices
Choice (4)  Response  

a.  x = b  
b.  x=y  
c.  y = b  
d.  x = y 
Question number: 642
Question
The King, queen and jack of clubs are removed from a deck of 52 cards and then wellshuffled. One card id selected from the remaining cards. The probability of getting a club is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 643
Question
The probability of guessing the correct answer to a certain test question is . If the probability of not guessing the correct answer to this question is , then x = ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c.  4  
d.  3 
Passage
A car is going on a long journey for 16 hours, starting at 5.00 hrs. The speed of the car at different hours is given below:
Time (in hrs):

5

7

9

11

13

17

15

19

21

Speed (in km/hour):

40

50

60

80

70

65

75

60

50

From the above table answer the following questions.
Question number: 644 (1 of 3 Based on Passage) Show Passage
Question
The percentage of decrease in speed during 19.00 hrs and 21.00 hrs is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
