IMO Mathematics Olympiad Class 7: Questions 52  56 of 1012
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Question number: 52
Question
Which of the following statements are correct?
(1). Every integer is rational number and every rational number is a fraction.
(2). A rational number is positive if and are either both positive or both negative.
(3). A rational number is negative if one of and is positive and other is negative.
(4). If there are two rational numbers with common denominator then the one with the larger numerator is larger than the other.
Choices
Choice (4)  Response  

a.  Statements 1 and 4 are incorrect 

b.  Statement 1 is incorrect 

c.  Statements 2 and 3 are incorrect 

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

Question number: 53
Question
The value of is________.
Choices
Choice (4)  Response  

a.  10 

b.  14 

c.  11 

d.  6 

Question number: 54
Question
The product of two rational numbers is. If one of the numbers is , then the other number is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 55
Question
The sign of the product of two unlike integers is________.
Choices
Choice (4)  Response  

a.  Negative 

b.  Positive or Negative 

c.  Cannot be determined 

d.  Positive 

Question number: 56
Question
The product of two rational numbers is. If one of the numbers is , then the other number is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

