IMO Mathematics Olympiad Class 8: Questions 720  727 of 1029
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Question number: 720
Question
A die is thrown. The probability that the number comes up odd is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 721
Question
Three unbiased coins are tossed. What is the probability of getting at most two heads?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 722
Question
The number which is divisible by 5 is________.
Choices
Choice (4)  Response  

a.  12345 

b.  24675 

c.  21300 

d.  All a. , b. and c. are correct 

Question number: 723
Question
lies on________.
Choices
Choice (4)  Response  

a.  Positive y axis 

b.  Positive x axis 

c.  Negative y axis 

d.  Negative x axis 

Question number: 724
Question
The number which is exactly divisible by 99 is________.
Choices
Choice (4)  Response  

a.  33210 

b.  25176 

c.  8217 

d.  All of the above 

Question number: 725
Question
Find the least value of x for which 7x5462 is divisible by 9.
Choices
Choice (4)  Response  

a.  5 

b.  3 

c.  2 

d.  4 

Question number: 726
Question
When a certain number is multiplied by 13, the product consists entirely of fives. The smallest such number is________.
Choices
Choice (4)  Response  

a.  4273 

b.  4271 

c.  4275 

d.  4256 

Question number: 727
Question
If is divided by 5 leaves a remainder of 4, then one’s digit of must be________.
Choices
Choice (4)  Response  

a.  Either 9 or 4 

b.  Either 1 or 4 

c.  Either 5 or 4 

d.  All of the above 
