IMO Mathematics Olympiad Class 10: Questions 16  22 of 889
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Question number: 16
Question
Given that H. C. F , find L. C. M .
Choices
Choice (4)  Response  

a.  53560  
b.  63670  
c.  73680  
d.  83790 
Question number: 17
Question
is integers, none of which are divisible by 4. The remainder when is divided by 4 is ________
Choices
Choice (4)  Response  

a.  1 or 2  
b.  1  
c.  0  
d.  0 or 1 
Question number: 18
Question
Sum of squares of the two consecutive natural numbers is 421. The two consecutive numbers respectively________
Choices
Choice (4)  Response  

a.  14 and 15  
b.  34 and 35  
c.  21 and 22  
d.  67 and 68 
Question number: 19
Question
Given that H. C. F , find L. C. M .
Choices
Choice (4)  Response  

a.  19584  
b.  22513  
c.  21390  
d.  23625 
Question number: 20
Question
Given that H. C. F , find L. C. M .
Choices
Choice (4)  Response  

a.  100620  
b.  100420  
c.  100520  
d.  100320 
Question number: 21
Question
Rational number between and is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 22
Question
A eight digit number is a multiple of 73 and 137. If the second digit from left is 7, then 6^{th} digit from the left of the number is ________
Choices
Choice (4)  Response  

a.  3  
b.  5  
c.  7  
d.  9 