IMO Mathematics Olympiad (SOF) Class 6: Questions 123  130 of 1049
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 1049 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 450.00 or
Question number: 123
Question
Multiplicative identity is________
Choices
Choice (4)  Response  

a.  2 

b.  0 

c.  3 

d.  1 

Question number: 124
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: 125
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: 126
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: 127
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: 128
Question
A number is always divisible by 90 if
Choices
Choice (4)  Response  

a.  It is divisible by both 9 and 10 

b.  It is divisible by both 5 and 18 

c.  It is divisible by both 2 and 45 

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

Question number: 129
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: 130
Question
The prime number that is placed at fifth after prime number 7 is
Choices
Choice (4)  Response  

a.  23 

b.  29 

c.  19 

d.  27 
