NSTSE (National Science Talent Search Exam Unified Council) Class 8: Questions 1093  1101 of 2028
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Question number: 1093
» Mathematics » Algebraic Expressions and Identities
Question
What must be added to to get ?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  None of the above 
Question number: 1094
» Mathematics » Algebraic Expressions and Identities
Question
The difference of the degrees of the polynomials and is:
Choices
Choice (4)  Response  

a.  2  
b.  3  
c.  4  
d.  1 
Question number: 1095
» Mathematics » Direct and Inverse Proportions
Question
A man completes of a job in 12 days. At this rate, how many more days will it takes him to finish the job?
Choices
Choice (4)  Response  

a.  13  
b.  8  
c.  18  
d.  10 
Question number: 1096
» Mathematics » Exponents and Powers
Question
The value of is:
Choices
Choice (4)  Response  

a. 
 
b.  49  
c. 
 
d.  49 
Question number: 1097
» Mathematics » Direct and Inverse Proportions
Question
The average age of three boys is 30 years and their ages are in the ratio 2: 5: 8. The age of the youngest boy is:
Choices
Choice (4)  Response  

a.  48 years  
b.  30 years  
c.  12 years  
d.  15 years 
Question number: 1098
Question
What change in percent is made in the area of a rectangle by decreasing its length and increasing its breadth by 8%?
Choices
Choice (4)  Response  

a.  0.08 % increase  
b.  1.64 % decrease  
c.  0.64 % increase  
d.  0.64 % decrease 
Question number: 1099
» Mathematics » Exponents and Powers
Question
The value of is
Choices
Choice (4)  Response  

a. 
 
b.  729  
c.  81  
d. 

Question number: 1100
» Mathematics » Algebraic Expressions and Identities
Question
The product of and is equal to the quotient obtained when is divided by ________.
Choices
Choice (4)  Response  

a.  0  
b.  x  
c. 
 
d.  1 
Question number: 1101
Question
The table shows the distribution of marks in Computer test. Grade B is given to marks ranging from 31 to 45. Calculate the percentage of pupils who obtained a grade B.
Marks  Frequency 
31  35  3 
36  40  7 
41  45  12 
46  50  9 
51  55  6 
56  60  3 
Choices
Choice (4)  Response  

a.  26%  
b.  55%  
c.  65%  
d.  75% 