Mathematics [NSTSE (National Science Talent Search Exam Unified Council) Class 9]: Questions 872  877 of 989
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Question number: 872
Question
MCQ▾A cylindrical vessel of diameter 9 cm is partly filled with water. 200 lead balls are dropped in it. The raise in water level is 0.6 cm. The diameter of each ball is ________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 873
Question
MCQ▾The probability of getting a number greater than 3 or an odd number in a single throw of a fair die is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 874
Question
MCQ▾The top of a broken tree touches the ground at a distance of 40 m from its base. If the tree is broken at a height of 9 m from the ground, then the actual height of the tree is
Choices
Choice (4)  Response  

a.  90 m  
b.  81 m  
c.  49 m  
d.  50 m 
Question number: 875
Question
MCQ▾What is the percentage of least number in the greatest number if are arranged in ascending or descending order?
Choices
Choice (4)  Response  

a.  40%  
b. 
 
c.  35%  
d. 

Question number: 876
Question
MCQ▾A cone of radius 25 cm is divided into two parts by drawing a plane through the midpoints of its axis, parallel to its base. The ratio of volumes of the two parts formed is ________.
Choices
Choice (4)  Response  

a.  5: 1  
b.  12: 1  
c.  1: 7  
d.  1: 14 
Question number: 877
Question
MCQ▾The sum of 20 numbers is 580. The mean of those numbers is
Choices
Choice (4)  Response  

a.  21  
b.  19  
c.  29  
d.  58 