Mathematics (NSTSE (National Level Science Talent Search Examination) Class 10): Questions 20  27 of 973
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Question number: 20
» Mathematics » Trigonometry
Question
The value of
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 21
» Mathematics » Real Numbers
Question
The sum of additive inverse and multiplicative inverse of 3 is
Choices
Choice (4)  Response  

a.   3 

b.  2 

c.  0 

d.   1 

Question number: 22
» Mathematics » Real Numbers
Question
If be the rational numbers such the andthen________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 23
» Mathematics » Real Numbers
Question
The sum of 2 rational and irrational number is always
Choices
Choice (4)  Response  

a.  Irrational 

b.  Rational 

c.  All of the above 

d.  Question does not provide sufficient data or is vague 

Question number: 24
» Mathematics » Real Numbers
Question
Set of natural numbers is a subset of
Choices
Choice (4)  Response  

a.  Set of composite numbers 

b.  Set of real numbers 

c.  Set of even numbers 

d.  Set of odd numbers 

Question number: 25
» Mathematics » Real Numbers
Question
Which of the following is not a rational number?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 26
» Mathematics » Real Numbers
Question
The value of is
Choices
Choice (4)  Response  

a.  2.23 

b.  1.72 

c.  2.59 

d.  1.41 

Question number: 27
» Mathematics » Real Numbers
Question
If X: Every fraction is a rational number and,
Y: Every rational number is a fraction,
Then which is the correct option?
Choices
Choice (4)  Response  

a.  X is false and Y is true 

b.  X is true and Y is false 

c.  X and Y false 

d.  X and Y true 
