IMO Level 1 Mathematics Olympiad (SOF) Class 7: Questions 822  824 of 1022
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Question number: 822
Question
The lengths of the sides of a triangle are 60 dm, 0.8 decameter and 10 m. Then its area is ________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 823
Question
Calculate the area of the shaded region of the following figure. ABCD is a rectangle having length 30 cm, breadth 20 cm. E, F and G are midpoints of AB, CD and AD respectively.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 824
» Logical and Analytical Reasoning
Question
In the following diagram, if ○ represents people who like mathematics, represents people who like science and ▭ represent people who like history, then answer the following question.
How many people like science and history both?
Choices
Choice (4)  Response  

a.  3  
b.  5  
c.  9  
d.  8 