Mathematics [NSTSE (National Science Talent Search Exam Unified Council) Class 9]: Questions 864  871 of 989
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Question number: 864
Question
MCQ▾The perimeter of a rhombus is 96 cm and one of its diagonals is 36 cm. The length of the other diagonal is
Choices
Choice (4)  Response  

a.  64 cm,  
b.  32 cm,  
c.  32 cm,  
d.  64 cm, 
Question number: 865
Question
MCQ▾If ‘n’ is an irrational number then ‘3n’ is ________.
Choices
Choice (4)  Response  

a.  A rational number  
b.  An irrational number  
c.  A natural number  
d.  A whole number 
Question number: 866
Question
MCQ▾The arithmetic mean of nine given numbers is 16. Their sum is
Choices
Choice (4)  Response  

a.  72  
b.  More than 144  
c.  Between 72 and 144  
d.  144 
Question number: 867
Question
MCQ▾In a throw of a dice, the probability of getting a prime number is
Choices
Choice (4)  Response  

a.  6  
b. 
 
c.  2  
d. 

Question number: 868
Question
MCQ▾Which of the following is a rational number (s)?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  All a. , b. and c. are correct 
Question number: 869
Question
MCQ▾The sides of a triangle are 12 cm, 16 cm and 20 cm. The altitude to shortest side is
Choices
Choice (4)  Response  

a.  28 cm  
b.  36 cm  
c.  32 cm  
d.  16 cm 
Question number: 870
Question
MCQ▾The largest sphere is cut off from a cube of side 6 cm. The volume of the sphere will be:
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  108 
Question number: 871
Question
MCQ▾Which of the following is a pure surd?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
