IMO Mathematics Olympiad (SOF) Class 10: Questions 20  27 of 958
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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 

Question number: 23
Question
is ________
Choices
Choice (4)  Response  

a.  An integer 

b.  A natural number 

c.  An irrational number 

d.  A rational number 

Question number: 24
Question
If ‘a’ and ‘b’ are rational numbers and , then b = ________
Choices
Choice (4)  Response  

a.  4 

b.  6 

c.  7 

d.  8 

Question number: 25
Question
If , then s equals________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 26
Question
Value of is ________
Choices
Choice (4)  Response  

a.  1 

b.  4 

c.  0 

d.  2 

Question number: 27
Question
A circular field has a circumference of 360 km. Two cyclists Sumeet and Samrat start together and can cycle at speeds of 12 km/hr and 15 km/hr respectively round the circular field. After how many hours will they meet again at the starting point?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

