IMO Level 1 Mathematics Olympiad (SOF) Class 9: Questions 321  327 of 929
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Question number: 321
Question
If in the following image angle PQR is 110˚ then what would be the angle PSR?
Choices
Choice (4)  Response  

a.  120˚  
b.  170˚  
c.  140˚  
d.  150˚ 
Question number: 322
Question
If the purple angle is 40˚ and the yellow one is 30˚ what is the measure of aqua angle?
Choices
Choice (4)  Response  

a.  110˚  
b.  120˚  
c.  130˚  
d.  140˚ 
Question number: 323
Question
What change in percent is made in the area of a rectangle by increasing its length by and breadth by ?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 324
Question
In the figure, AD is the bisector of of , then ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 325
Question
The distance between the points P (5,3) and Q (5,6) is calculated as
Choices
Choice (4)  Response  

a.  4  
b.  3  
c.  3  
d.  4 
Question number: 326
Question
If two medians of a triangle are equal, then the triangle is ________
Choices
Choice (4)  Response  

a.  Equilateral triangle  
b.  Right angle triangle  
c.  Scalene triangle  
d.  Isosceles triangle 
Question number: 327
Question
The base of a prism is a right angle triangle and the two sides containing the right angle are 8 cm and 15 cm. if its height is 20 cm, then the volume of the prism is ________
Choices
Choice (4)  Response  

a.  160 c. cm.  
b.  600 c. cm.  
c.  300 c. cm.  
d.  1200 c. cm. 