IMO Mathematics Olympiad Class 9: Questions 476  482 of 919
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Question number: 476
Question
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 477
» Introduction to Euclid's Geometry
Question
Two distinct points in a plane determine ________ line.
Choices
Choice (4)  Response  

a.  Tnree  
b.  Two  
c.  Unique  
d.  All of the above 
Question number: 478
Question
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 479
Question
The mean weight of 80 students in a class is 60 kg. The mean weight of boys is 70 kg while that of the girls is 50 kg. the number of boys and girls are________
Choices
Choice (4)  Response  

a.  35, 75  
b.  45, 35  
c.  40, 40  
d.  10, 30 
Question number: 480
» Introduction to Euclid's Geometry
Question
If ∠A and ∠B are complementary angles and m∠A is x˚, which equation can be used to find m∠B which is denoted by y?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 481
Question
A cloth merchant has announced rebate in prices. If one needs to have a rebate of Rs. 40, then how many shirts each costing Rs. 32, he should purchase?
Choices
Choice (4)  Response  

a.  10  
b.  6  
c.  5  
d.  7 
Question number: 482
Question
By selling a Car for Rs. 70000, a shopkeeper gains . If the profit is reduced to , then the selling price will be ________
Choices
Choice (4)  Response  

a.  Rs. 75000  
b.  Rs. 90000  
c.  Rs. 85000  
d.  Rs. 55000 