Number Systems (IMO Mathematics Olympiad Class 6): Questions 30  38 of 84
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Question number: 30
» Number Systems
Question
Additive identity is________
Choices
Choice (4)  Response  

a.  1 

b.  0 

c.  2 

d.  3 

Question number: 31
» Number Systems
Question
Difference between place value of 7 face value of 5 in 81, 23, 457 is________
Choices
Choice (4)  Response  

a.  2 

b.  22 

c.  12 

d.  20 

Question number: 32
» Number Systems
Question
Multiplicative identity is________
Choices
Choice (4)  Response  

a.  2 

b.  0 

c.  3 

d.  1 

Question number: 33
» Number Systems
Question
Which of the following statement is true?
Statement I: Every whole number is a rational number
Statement II: Every integer is a rational number
Choices
Choice (4)  Response  

a.  I true, 

b.  I and II false 

c.  I and II true 

d.  II true 

Question number: 34
» Number Systems
Question
The number with which 96 is multiplied so that product remains the same is ________
Choices
Choice (4)  Response  

a. 


b.  1 

c.  0 

d.  96 

Question number: 35
» Number Systems
Question
Multiplicative identity for a rational number is________
Choices
Choice (4)  Response  

a.  2 

b.  0 

c.  1 

d.  None of the above 

Question number: 36
» Number Systems
Question
If are two whole numbers, then commutative law is applicable to subtraction if and only if
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 37
» Number Systems
Question
Which of the following statement is true if N, W and I are sets of Natural, Whole and Integer numbers respectively?
Choices
Choice (4)  Response  

a.  I ⊂ W ⊂ N 

b.  N ⊂ W ⊂ I 

c.  I ⊂ N ⊂ W 

d.  W ⊂ N ⊂ I 

Question number: 38
» Number Systems
Question
Which sign will come in the blank space to make the expression true?
Choices
Choice (4)  Response  

a.  ≤ 

b.  > 

c.  < 

d.  = 
