Mathematics [NSTSE (National Science Talent Search Exam Unified Council) Class 9]: Questions 832  838 of 989
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Question 832
Question
MCQ▾The radius of a cylinder is doubled but its lateral surface area is unchanged. Then its height must be
Choices
Choice (4)  Response  

a.  Constant  
b.  Doubled  
c.  Halved  
d.  Trebled 
Question 833
Question
MCQ▾is a ________.
Choices
Choice (4)  Response  

a.  Positive rational number  
b.  Either positive or negative rational number  
c.  Neither positive nor negative rational number  
d.  Negative rational number 
Question 834
Question
MCQ▾The mode of a set of observations is the value which
Choices
Choice (4)  Response  

a.  Is central  
b.  Occurs most frequently  
c.  Is between maximum and minimum  
d.  None of the above 
Question 835
Question
MCQ▾The two irrational numbers between and are
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  None of the above 
Question 836
Question
MCQ▾The factors of are:
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  Question does not provide sufficient data or is vague 
Question 837
Question
MCQ▾A top is of the shape of a cone over a hemisphere. The radius of the hemisphere is 77 cm. The total height of the top is 113 cm. The total area of top is ________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  None of the above 
Question 838
Question
MCQ▾If , then the value of is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
