Mathematics [NSTSE (National Science Talent Search Exam Unified Council) Class 7]: Questions 278  282 of 1128
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Question number: 278
» Mathematics » Rational Numbers
Question
Which of the following alternatives is wrong? Given that
(I) Difference of two rational numbers is a rational number
(II) Subtraction is commutative on rational numbers
(III) Addition is not commutative on rational numbers
Choices
Choice (4)  Response  

a.  (I) only  
b.  (I) and (III)  
c.  (II) and (III)  
d.  None of the above 
Question number: 279
» Mathematics » Integers
Question
If the exponent of a negative integer is even then the result is a ________ integer.
Choices
Choice (4)  Response  

a.  0  
b.  Positive  
c.  Negative  
d.  Question does not provide sufficient data or is vague 
Question number: 280
» Mathematics » Exponents and Powers
Question
Simplify
Choices
Choice (4)  Response  

a.  2  
b.  1  
c.  4  
d. 

Question number: 281
» Mathematics » Symmetry
Question
The number of line of symmetries that the given figure has:
Choices
Choice (4)  Response  

a.  3  
b.  4  
c.  1  
d.  2 
Question number: 282
» Mathematics » Rational Numbers
Question
is a
Choices
Choice (4)  Response  

a.  Either positive or negative rational number  
b.  Negative rational number  
c.  Neither positive nor negative rational number  
d.  Positive rational number 