NSTSE (National Science Talent Search Exam Unified Council) Class 8: Questions 421  426 of 2028
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Question number: 421
Question
The table shows the distribution of marks in English test. Grade C is given to marks ranging from 21 to 30. Calculate the percentage of pupils who obtained a grade C.
Marks  Frequency 
21  25  4 
26  30  6 
31  35  15 
36  40  5 
41  45  12 
46  50  8 
Choices
Choice (4)  Response  

a.  15%  
b.  10%  
c.  35%  
d.  20% 
Question number: 422
Question
The area of a sector of a circle of radius 6 cm cut off by an arc which is 6.3 cm long is:
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 423
» Mathematics » Playing with Numbers
Question
A number is always divisible by 48 if:
Choices
Choice (4)  Response  

a.  It is divisible by both 4 and 12  
b.  It is divisible by both 6 and 8  
c.  It is divisible by both 2 and 24  
d.  All a. , b. and c. are correct 
Question number: 424
» Mathematics » Exponents and Powers
Question
The value of is:
Choices
Choice (4)  Response  

a.  17  
b.  19  
c. 
 
d. 

Question number: 425
» Mathematics » Comparing Quantities
Question
A man bought 485 kg of sugar for Rs. 5820 and sold it so as to gain 10%. The selling price per kilogram of sugar is:
Choices
Choice (4)  Response  

a.  Rs. 12.3  
b.  Rs. 15.8  
c.  Rs. 10  
d.  Rs. 13.2 
Question number: 426
Question
The perimeter of a trapezium is 34 cm and its nonparallel sides are each equal to 3 cm and its altitude is 12 cm. Its area is:
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
