IMO Level 1 Mathematics Olympiad (SOF) Class 7: Questions 502  506 of 1022
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Question number: 502
Question
A drum of food oil is full. When 12 liters of oil is drawn from it, it is full. The capacity of the drum is ________.
Choices
Choice (4)  Response  

a.  21 liters  
b.  Can’t be determined  
c.  18 liters  
d.  35 liters 
Question number: 503
Question
There are 7 marbles in a box in which 5 are red and 2 are blue. What is the probability of getting a red marble?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 504
Question
The cost price of earrings is Rs. 5200 and the loss percent is . Find the selling price of the earrings.
Choices
Choice (4)  Response  

a.  Rs. 5850  
b.  Rs. 4250  
c.  Rs. 3850  
d.  Rs. 5540 
Question number: 505
Question
Each of two groups of tourists has 60 people. If of the first group and of the second group board buses to travel to a museum, how many more people of the first group board buses than of the second group?
Choices
Choice (4)  Response  

a.  40  
b.  2  
c.  5  
d.  4 
Question number: 506
Question
Aman’s mother was 21 years old when his sister was born. His father is 8 years older than his mother. Now Aman is 17 years old and his sister is 3 years older than him. What is the present age of Aman’s father?
Choices
Choice (4)  Response  

a.  50 years  
b.  46 years  
c.  49 years  
d.  47 years 