IMO Mathematics Olympiad Class 10: Questions 371  376 of 908
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Question number: 371
» Triangle, Circle & Constructions
Question
J, K and L are respectively the midpoints of sides XY, YZ and XZ of . Find the ratio of the area of .
Choices
Choice (4)  Response  

a.  2: 3 

b.  2: 7 

c.  1: 4 

d.  3: 5 

Question number: 372
Question
If occur with frequencies respectively, then the arithmetic mean is ________
Choices
Choice (4)  Response  

a.  125 

b.  111 

c.  120 

d.  115 

Question number: 373
Question
The mean of 11 observations is 30. If the mean of the first 6 observations is 40 and that of the last 6 observations is 44, then the Sixth observation is ________
Choices
Choice (4)  Response  

a.  174 

b.  128 

c.  137 

d.  131 

Question number: 374
Question
The coordinates of the centre of a circle passing through is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 375
Question
Find the area of triangle if the coordinates of vertices are is ________
Choices
Choice (4)  Response  

a.  9 sq. units 

b.  5 sq. units 

c.  2 sq. units. 

d.  3 sq. units 

Question number: 376
Question
Find the area of the quadrilateral, the coordinates of whose angular points taken in order are .
Choices
Choice (4)  Response  

a.  8 

b.  6 

c.  12 

d.  10 
