Number System (IMO Mathematics Olympiad (SOF) Class 7): Questions 23  29 of 81
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Question number: 23
» Number System
Question
The average of the two middle rational numbers if are arranged in descending order is________.
Choices
Choice (4)  Response  

a.  6 

b.  4 

c.  1 

d.  5 

Question number: 24
» Number System
Question
If p: When a positive integer and a negative integer are added we always get a negative integer.
q: When two negative integers are added, we get a positive integer, then
Choices
Choice (4)  Response  

a.  P is true and q is false 

b.  P and q are true 

c.  p is false and q is true 

d.  P and q are false 

Question number: 25
» Number System
Question
Which integer is the additive inverse of itself?
Choices
Choice (4)  Response  

a.  0 

b.  2 

c.  3 

d.  1 

Question number: 26
» Number System
Question
The value of, where is absolute value of an integer is________.
Choices
Choice (4)  Response  

a.  1 

b.  2 

c.  0 

d.  3 

Question number: 27
» Number System
Question
Which pair of numbers does not have a product equal to 45?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 28
» Number System
Question
A tank contains 500 liters of water. Due to a small hole in the tank, the quantity of water is decreasing at the rate of 9 liters every hour. What will be the quantity of the water in the tank after 10 hours?
Choices
Choice (4)  Response  

a.  410 liters 

b.  90 liters 

c.  491 liters 

d.  400 liters 

Question number: 29
» Number System
Question
For any two rational numbers x and y which of the following are correct, if x is positive and y is negative?
1. X < Y 2. X = Y 3. X > Y
Choices
Choice (4)  Response  

a.  Only 3 is correct 

b.  Only 1 and 2 are correct 

c.  Only 2 and 3 are correct 

d.  All of the above 
