NDA (National Defense Academy) Mathematics: Questions 239  245 of 384
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Question number: 239
» Algebra » Geometric and Harmonic Progressions
Question
If the sequence is a geometric progression and then what is the value of ?
Choices
Choice (4)  Response  

a.  3  
b.  1  
c.  5  
d.  Cannot be determined 
Question number: 240
» Trigonometry » Trigonometrical Ratios
Appeared in Year: 2012
Question
The angle of elevation of the tip of a flag staff from a point due south of its base is . What is the height of the flagstaff corrects to the nearest meter.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 241
» Trigonometry » Angles and Their Measures in Degrees and in Radians
Question
What is the value of ?
Choices
Choice (4)  Response  

a. 
 
b.  0  
c. 
 
d. 

Question number: 242
» Analytical Geometry of Two and Three Dimensions » Ellipse and Hyperbola
Appeared in Year: 2012
Question
If the latus rectum of an ellipse is equal to half of the minor axis, then what is its eccentricity?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 243
» Algebra » Arithmetic Progression
Question
The geometric mean and harmonic mean of two nonnegative observations are and respectively. Then what is the arithmetic mean of the observation equal to:
Choices
Choice (4)  Response  

a.  32.5  
b.  33.3  
c.  34  
d.  32 
Question number: 244
» Algebra » Quadratic Equations with Real Coefficients
Appeared in Year: 2012
Question
What is the distant between the lines and ?
Choices
Choice (4)  Response  

a.  Units  
b.  0  
c.  Units  
d.  Units 
Question number: 245
» Algebra » Quadratic Equations with Real Coefficients
Appeared in Year: 2016
Question
If both the roots of the equation lie between then which one of the following is correct?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
