Number System (IMO Mathematics Olympiad (SOF) Class 7): Questions 11  16 of 81
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Question number: 11
» Number System
Question
An insect crawls up 5 cm every second on a 60 cm vertical rod and then falls down 2 cm over the next second. How many seconds will it take to climb the rod?
Choices
Choice (4)  Response  

a.  39 seconds 

b.  30 seconds 

c.  60 seconds 

d.  20 seconds 

Question number: 12
» Number System
Question
The average of the two middle rational numbers if are arranged in ascending order is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 13
» Number System
Question
The value of is ________.
Choices
Choice (4)  Response  

a. 


b.  144 

c.  240 

d.  0 

Question number: 14
» Number System
Question
8 is a ________ number
Choices
Choice (4)  Response  

a.  Prime 

b.  Irrational 

c.  Rational 

d.  Question does not provide sufficient data or is vague 

Question number: 15
» Number System
Question
In a magic square each row, column and diagonal have the same sum, then the values of A and B are respectively________.
6  1  4 
A  3  5 
2  7  B 
Choices
Choice (4)  Response  

a. 


b.  0, 0 

c.  1, 1 

d. 


Question number: 16
» Number System
Question
If p: When a positive integer and a negative integer are added we always get a positive integer.
q: When two positive integers are added, we get a positive integer, then
Choices
Choice (4)  Response  

a.  P and q are false 

b.  P is true and q is false 

c.  P and q are true 

d.  P is false and q is true 
