Playing With Numbers (IMO Mathematics Olympiad Class 6): Questions 34  42 of 86
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Question number: 34
» Playing With Numbers
Question
The smallest number which when divided by 4, 16, 32 and 40 and leaves a remainder of 3, 15, 31 and 39 respectively is
Choices
Choice (4)  Response  

a.  161  
b.  159  
c.  147  
d.  239 
Question number: 35
» Playing With Numbers
Question
HCF of two coprime numbers is
Choices
Choice (4)  Response  

a.  0  
b.  1  
c.  2  
d.  None of the above 
Question number: 36
» Playing With Numbers
Question
When a number is divided by seven, it has a remainder of 2. When it is divided by six, it has remainder of 3. What is the number?
Choices
Choice (4)  Response  

a.  16  
b.  44  
c.  38  
d.  9 
Question number: 37
» Playing With Numbers
Question
The coprime numbers from the following pairs, is
Choices
Choice (4)  Response  

a.  7 and 63  
b.  63 and 81  
c.  35 and 21  
d.  36 and 25 
Question number: 38
» Playing With Numbers
Question
The smallest value of ‘a’ in the number 321a8 so that it is divisible by 8 is:
Choices
Choice (4)  Response  

a.  1  
b.  2  
c.  4  
d.  3 
Question number: 39
» Playing With Numbers
Question
693 is divisible by
Choices
Choice (4)  Response  

a.  6  
b.  9  
c.  3 & 9  
d.  3 
Question number: 40
» Playing With Numbers
Question
Prime factorization of 13915 is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 41
» Playing With Numbers
Question
Number of prime and coprime numbers from 80 to 100 are
Choices
Choice (4)  Response  

a.  7  
b.  3  
c.  4  
d.  5 
Question number: 42
» Playing With Numbers
Question
Observe the following patterns. Then find the sum of .
………………………………………………………. ……………………………………………………….
Choices
Choice (4)  Response  

a.  150  
b.  320  
c.  180  
d.  200 