Mathematics [NSTSE (National Science Talent Search Exam Unified Council) Class 9]: Questions 723  730 of 989
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Question 723
Question
MCQ▾is
Choices
Choice (4)  Response  

a.  An integer  
b.  Imaginary  
c.  Irrational  
d.  Rational 
Question 724
Question
MCQ▾The average of A & B is 20, B & C is 22, C & A is 26. Then the average of A, B & C [approximately] is
Choices
Choice (4)  Response  

a.  21  
b.  24  
c.  42  
d.  23 
Question 725
Question
MCQ▾The total surface area of a cylinder is 220 sq cm with height 6.5 cm. Then its volume is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 726
Question
MCQ▾The area of a rhombus is 24 and one of its diagonal is 8 cm. Its perimeter is
Choices
Choice (4)  Response  

a.  18 cm  
b.  20 cm  
c.  32 cm  
d.  16 cm 
Question 727
Question
MCQ▾In a and is twice that of . Then =
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 728
Question
MCQ▾If A: Rational numbers are always closed under division and
R: Division by zero is not defined, then which of the following statement is correct?
Choices
Choice (4)  Response  

a.  A is True and R is False  
b.  A is True and R is the correct explanation of A  
c.  A is False and R is the correct explanation of A  
d.  None of the above 
Question 729
Question
MCQ▾The value of a if and .
Choices
Choice (4)  Response  

a.  19  
b.  5  
c.  14  
d.  11 
Question 730
Question
MCQ▾What must be subtracted from to get ?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
