IMO Mathematics Olympiad (SOF) Class 9: Questions 398  401 of 919
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Question number: 398
Question
The sides BC, CA and AB of are produces in order to form exterior angles and, then is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 399
» Lines, Angles and Quadrilaterals
Question
In the adjoining figure, Line p and q are transversals, then ST = ________
Choices
Choice (4)  Response  

a.  12 units 

b.  10 units 

c.  14 units 

d.  15 units 

Question number: 400
Question
In the medians PS, QT and RU pass through O. if, and then OS is ________
Choices
Choice (4)  Response  

a.  2.6 

b.  2.5 

c.  2.9 

d.  2.3 

Question number: 401
Question
What change in percent is made in the area of a rectangle by decreasing its length and increasing its breadth by ?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

