IMO Level 1 Mathematics Olympiad (SOF) Class 7: Questions 487  491 of 1022
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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.  6 hours 52 minutes 55 seconds  
b.  5 hours 15 minutes 45 seconds  
c.  6 hours 51 minutes 54 seconds  
d.  5 hours 51 minutes 54 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.  11  
b.  10  
c.  8  
d.  9 
Question number: 490
Question
Ishika and her grandfather both had birthdays last week. The sum of their ages is 100 years. Her grandfather’s age is 4 times Ishika’s age. How old is Ishika?
Choices
Choice (4)  Response  

a.  25 years  
b.  22 years  
c.  16 years  
d.  20 years 
Question number: 491
Question
When Krunal travelled 72 km he found that of the entire journey was still left. The length of the total journey is
Choices
Choice (4)  Response  

a.  126 km  
b.  166 km  
c.  130 km  
d.  129 km 