Mathematics [NSTSE (National Science Talent Search Exam Unified Council) Class 9]: Questions 544  550 of 989
Access detailed explanations (illustrated with images and videos) to 2000 questions. Access all new questions tracking exam pattern and syllabus. View the complete topicwise distribution of questions. Unlimited Access & Unlimited Time!
View Sample Explanation or View Features.
Rs. 550.00 OR
How to register? Already Subscribed?
Question 544
Question
MCQ▾The area of the base of a cone is 308 sq cm. Its height is 24 cm. Then its total surface area is ________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 545
Question
MCQ▾If a and b are two rational numbers, then which of the following statements is wrong?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  None of the above 
Question 546
Question
MCQ▾The ratio of the volume and curved surface area of a cylinder of unit radius and unit height
Choices
Choice (4)  Response  

a.  2: 3  
b.  2: 1  
c.  1: 2  
d.  3: 2 
Question 547
Question
MCQ▾The average weight of sample of 8 mangoes is 58 g. Later it was found that the weighing machine had shown the weight of each mango 3 g more. The correct average weight of a mango is
Choices
Choice (4)  Response  

a.  61 g  
b.  55 g  
c.  66 g  
d.  50 g 
Question 548
Question
MCQ▾A cylindrical rod whose height is 16 times of its radius is melted and recast into spherical balls of same radius. The number of balls will be
Choices
Choice (4)  Response  

a.  6  
b.  12  
c.  8  
d.  4 
Question 549
Question
MCQ▾If 3,7, 8 and 4 occur with frequencies 2,6, 7 and 3 respectively, then the arithmetic mean is
Choices
Choice (4)  Response  

a.  18  
b.  6.44  
c.  6.2  
d.  8 
Question 550
Question
MCQ▾Which of the following statements is true?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
