IMO Mathematics Olympiad (SOF) Class 9: Questions 617  623 of 919
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Question number: 617
Question
A man purchases an electric heater whose printed price is Rs. 160. If he received two successive discounts of and , he p
Choices
Choice (4)  Response  

a.  Rs. 112 

b.  Rs. 115.20 

c.  Rs. 119.60 

d.  Rs. 129.60 

Question number: 618
» Linear Equations in Two Variables
Question
If, then values of y are________
Choices
Choice (4)  Response  

a.  y = 15 and y=10 

b.  y=10 and y=30 

c.  y = 25 and y = 5 

d.  y = 20 and y = 30 

Question number: 619
Question
Algebraic sum of the deviation of a set of values of a data from their mean is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 620
» Linear Equations in Two Variables
Question
Rakesh has dollars more than Mohan has, and together they have a total of dollars. Which of the following represented the number of dollars than Mohan has?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 621
» Introduction to Euclid's Geometry
Question
In the figure , and, if , what is the length of ?
Choices
Choice (4)  Response  

a.  1 

b.  2 

c.  3 

d.  4 

Question number: 622
Question
Two dice are thrown simultaneously. The probability of getting a multiple of 2 on one die and a multiple of 3 on the other is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 623
Question
The age of Sandhya’s father is 5 times of his age. If 6 years ago, father’s age was 8 times of the age of his son at that time. What is Sandhya’s father present age?
Choices
Choice (4)  Response  

a.  75 years 

b.  70 years 

c.  56 years 

d.  41 years 
