IMO Mathematics Olympiad Class 7: Questions 485  489 of 1012
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Question number: 485
Question
A drum of water is full. When 8 liters of water is drawn from it, it is full. The capacity of the drum is ________.
Choices
Choice (4)  Response  

a.  Can’t be determined 

b.  45 liters 

c.  23 liters 

d.  32 liters 

Question number: 486
Question
A school invited 500 parents of students for meeting. Of the parents invited, 445 attended. What percent of parents invited attended for meeting?
Choices
Choice (4)  Response  

a.  75% 

b.  56% 

c.  89% 

d.  87% 

Question number: 487
Question
There are 8 marbles in a box with numbers 1 to 8 marked on them. What is the probability of drawing a marble with number 2?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 488
Question
Four bells toll at intervals of 54 seconds, 46 seconds and 34 seconds respectively. They start ringing together at a particular time. They next toll together after ________.
Choices
Choice (4)  Response  

a.  5 hours 51 minutes 54 seconds 

b.  6 hours 51 minutes 54 seconds 

c.  5 hours 15 minutes 45 seconds 

d.  6 hours 52 minutes 55 seconds 

Question number: 489
Question
I was sitting alone in a park. After a while there came an old man followed by an old lady. They were followed by two couples who were accomplished by a child each. What was the number of total persons present in the park?
Choices
Choice (4)  Response  

a.  10 

b.  11 

c.  9 

d.  8 
