IMO Level 1 Mathematics Olympiad (SOF) Class 9: Questions 282  286 of 929
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Question number: 282
Question
In the medians XC, YB and ZA pass through O. If , then YB is ________
Choices
Choice (4)  Response  

a.  19 

b.  21 

c.  26 

d.  11 

Question number: 283
Question
In the figure , and . If the exterior angle XZK is, then the angle NMX is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 284
Question
The number of spherical balls each 4 cm in diameter be made out of a rectangular solid is ________
Choices
Choice (4)  Response  

a.  107 

b.  105 

c.  102 

d.  109 

Question number: 285
Question
The ratio between the perimeter and breadth of rectangle is. If the area of the rectangle is 116 sq. cm. then length of the rectangle is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 286
Question
The and are right angles. If , and , then the length of BD is ________
Choices
Choice (4)  Response  

a.  16 cm 

b.  15 cm 

c.  12 cm 

d.  25 cm 
