Mathematics [NSTSE (National Science Talent Search Exam Unified Council) Class 9]: Questions 839  845 of 989
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Question 839
Question
MCQ▾The mean of 551,553,555,557,559 and 561 is
Choices
Choice (4)  Response  

a.  553  
b.  561  
c.  559  
d.  556 
Question 840
Question
MCQ▾The sum of the deviations of the variable values 5,9, 10,12,14 from 10 is
Choices
Choice (4)  Response  

a.  10  
b.  1  
c.  0  
d.  All of the above 
Question 841
Question
MCQ▾When two dice are thrown, the probability of getting a number always greater than 3 on the second dice is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  None of the above 
Question 842
Question
MCQ▾The mean of 20 numbers is 40. If 2 is added to each of the first ten numbers, then the mean of the new set of 20 numbers is
Choices
Choice (4)  Response  

a.  41  
b.  35.5  
c.  21  
d.  20.5 
Question 843
Question
MCQ▾The length of the hypotenuse of a right angled triangle whose two sides measure 8 cm and 0.15 m is
Choices
Choice (4)  Response  

a.  8.15 cm  
b.  0.23 cm  
c.  17 cm  
d.  15 cm 
Question 844
Question
MCQ▾An isosceles triangle can be obtuse angled.
Choices
Choice (4)  Response  

a.  True  
b.  Cannot be determined  
c.  False  
d.  None of the above 
Question 845
Question
MCQ▾A hemispherical bowl is made of steel of 0.2 cm thickness. The inner radius of the bowl is 15 cm. The volume of steel used is ________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
