IMO Mathematics Olympiad (SOF) Class 5: Questions 87  92 of 837
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Question number: 87
Question
which of the following is true?
Choices
Choice (4)  Response  

a. 


b. 


c.  Both a. and b. are correct 

d.  Question does not provide sufficient data or is vague 

Question number: 88
Question
LXXXI – LXXX = ________.
Choices
Choice (4)  Response  

a.  1 

b.  0 

c.  10 

d.  Question does not provide sufficient data or is vague 

Question number: 89
Question
Given that 70 is the 2^{nd} common multiple of 5 and
. Find the smallest possible number for
Choices
Choice (4)  Response  

a.  5 

b.  7 

c.  3 

d.  9 

Question number: 90
Question
Multiply the 3^{rd} multiple of by the 9^{th} multiple of 4. The answer is________.
Choices
Choice (4)  Response  

a.  3 

b.  4 

c.  2 

d.  27 

Question number: 91
Question
Given that 18 is common multiple of
and 3. Find the greatest possible number for
Choices
Choice (4)  Response  

a.  9 

b.  6 

c.  2 

d.  10 

Question number: 92
Question
Given that 10 is common multiple of
and 2. Find the greatest possible number for
Choices
Choice (4)  Response  

a.  10 

b.  9 

c.  2 

d.  5 
