NDA (National Defence Academy) Mathematics: Questions 305  311 of 384
Access detailed explanations (illustrated with images and videos) to 384 questions. Access all new questions we will add tracking exampattern and syllabus changes. Subscription can be renewed yearly absolutely FREE! View Sample Explanation or View Features.
Rs. 250.00 or
How to register?
Question number: 305
» Matrices and Determinants » Adjoint and Inverse of a Square Matrix
Appeared in Year: 2012
Question
If is a square matrix such that where is the identity matrix, then what ia equal to?
Choices
Choice (4)  Response  

a.  A 

b. 


c.  Transpose of 

d.  Null matrix 

Question number: 306
» Matrices and Determinants » Operations on Matrices Determinant of a Matrix,
Appeared in Year: 2012
Question
If a matrix has inverse and then which one of the following is correct?
Choices
Choice (4)  Response  

a.  May not be equal to 

b.  Should be equal to 

c.  And should be unit matrices 

d.  None of the above 

Question number: 307
» Matrices and Determinants » Operations on Matrices Determinant of a Matrix,
Question
Let,
Then, What is the value of
Choices
Choice (4)  Response  

a.  0 

b.  33 

c.  35 

d.  13 

Question number: 308
» Differential Calculus » Derivatives of Sum
Question
If then what is equal to?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 309
» Algebra » Geometric and Harmonic Progressions
Appeared in Year: 2012
Question
If the sequence is a geometric progression and then what is the value of ?
Choices
Choice (4)  Response  

a.  Cannot be determined 

b.  5 

c.  3 

d.  1 

Question number: 310
» Trigonometry » Angles and Their Measures in Degrees and in Radians
Question
The actuate angle which the perpendicular from origin on the line makes with the is
Choices
Choice (4)  Response  

a.  Negative 

b.  Possitive 

c. 


d.  All of the above 

Question number: 311
» Vector Algebra » Scalar Product or Dot Product of TwoVectors
Appeared in Year: 2012
Question
If, then what is the unit vector parallel toin the opposite direction?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  Question does not provide sufficient data or is vague 
