Number Systems (IMO Mathematics Olympiad Class 6): Questions 52  57 of 84
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Question number: 52
» Number Systems
Question
Product of two integer is If one of the integers is , then the other is
Choices
Choice (4)  Response  

a.  19 

b.  1 

c.  0 

d.  9 

Question number: 53
» Number Systems
Question
The expression is equivalent to , uses the ________ property.
Choices
Choice (4)  Response  

a.  Associative 

b.  Closure 

c.  Identity 

d.  Commutative 

Question number: 54
» Number Systems
Question
Multiply the unit’s place of the number obtained by reversing the digits of the number 78923 with the hundred’s place of the number obtained by interchanging the digits in the unit’s place and the thousand’s place of the same number, we get________.
Choices
Choice (4)  Response  

a.  54 

b.  64 

c.  16 

d.  63 

Question number: 55
» Number Systems
Question
Subtract the number obtained by reversing the digits of the number 20198 from the number obtained by interchanging the digits in the unit’s place and the hundred’s place of the same number, we get________.
Choices
Choice (4)  Response  

a.  77121 

b.   68229 

c.  68004 

d.   68211 

Question number: 56
» Number Systems
Question
Find the sum of the given expression.
Choices
Choice (4)  Response  

a.  55 

b.   100 

c.   90 

d.  100 

Question number: 57
» Number Systems
Question
Multiplying a negative integer for even number of times gives a ________ result.
Choices
Choice (4)  Response  

a.  0 

b.  Negative 

c.  Positive 

d.  None of the above 
