NSTSE (National Science Talent Search Exam Unified Council) Class 9: Questions 618  624 of 2000
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Question number: 618
Question
In a , if is a right angle, then the longest side is
Choices
Choice (4)  Response  

a.  AB  
b.  CA  
c.  BC  
d.  None of the above 
Question number: 619
» Mathematics » Surface Areas & Volumes
Question
The height of a cone is 18 cm. A small cone is cut off at the top by a plane parallel to the base. If its volume is the volume of cone, the height at which the section is made is ________.
Choices
Choice (4)  Response  

a.  6.63 cm  
b.  12.48 cm  
c.  5.52 cm  
d.  12 cm 
Question number: 620
» Mathematics » Number Systems
Question
A rational number
Choices
Choice (4)  Response  

a.  Lies to the left side of 0 on the number line  
b.  Lies to the right side of 0 on the number line  
c.  It is not possible to represent on the number line  
d.  Cannot be determined on which side the number lies 
Question number: 621
Question
The probability that in a family of 3 children, there will be at least two boys is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c.  2  
d. 

Question number: 622
Question
If , then n = ________.
Choices
Choice (4)  Response  

a. 
 
b.  7x  
c. 
 
d.  Question does not provide sufficient data or is vague 
Question number: 623
» Mathematics » Surface Areas & Volumes
Question
The edge of a cube is 40 cm. How many small cubes of 10 cm edge can be formed from this cube?
Choices
Choice (4)  Response  

a.  28  
b.  32  
c.  64  
d.  16 
Question number: 624
» Mathematics » Surface Areas & Volumes
Question
A hollow sphere of internal and external diameters 8 cm and 16 cm respectively is melted into a cone of base diameter 24 cm. Find the height of the cone.
Choices
Choice (4)  Response  

a.  24.88 cm  
b.  21.6 cm  
c.  12.44 cm  
d.  6.22 cm 