NDA (National Defence Academy) Mathematics: Questions 69  75 of 384
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Question number: 69
» Differential Calculus » Algebraic Operations on Continuous Functions
Question
What isequal to?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  Question does not provide sufficient data or is vague 

Question number: 70
» Statistics and Probability » Definition of Probability
Appeared in Year: 2012
Question
Three Discs are thrown. What is the probability that the same number will appear on each of them?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 71
» Trigonometry » Angles and Their Measures in Degrees and in Radians
Question
If , then what is the value of ?
Choices
Choice (4)  Response  

a.  1 

b. 


c. 


d. 


Question number: 72
» Analytical Geometry of Two and Three Dimensions » Equation of a Line in Various Forms
Question
What is the sum of the squares of direction cosines of the line joining the points ?
Choices
Choice (4)  Response  

a. 


b.  1 

c.  0 

d. 


Question number: 73
» Algebra » Complex Numbers » Modulus
Question
If , then what is the imaginary part of equal to?
Choices
Choice (4)  Response  

a.  1 

b.  0 

c. 


d. 


Question number: 74
» Matrices and Determinants » Adjoint and Inverse of a Square Matrix
Appeared in Year: 2012
Question
If and then what isequal to?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 75
» Analytical Geometry of Two and Three Dimensions » Distance of a Point from a Line
Question
The angle of elevation of a tower at a level ground is . The angle of elevation becomes . when moved towards the tower. If the height of tower is , then what is equal to?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  Question does not provide sufficient data or is vague 
