Matrices and Determinants (BITSAT Mathematics): Questions 1  8 of 24
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Question number: 1
» Matrices and Determinants » Types of Matrices
Question
If is symmetric and then is –
Choices
Choice (4)  Response  

a.  Skew – symmetric 

b.  Symmetric 

c.  Diagonal 

d.  Both b. and c. are correct 

Question number: 2
» Matrices and Determinants » Types of Matrices
Question
A square matrix is called a diagonal matrix if for,
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 3
» Matrices and Determinants » Types of Matrices
Question
If inverse of a diagonal matrix is –
Choices
Choice (4)  Response  

a.  Diagonal 

b.  Symmetric 

c.  Skew – symmetric 

d.  None of the above 

Question number: 4
» Matrices and Determinants » Determinants and Matrices of Order Two and Three
Question
The roots of equation are –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 5
» Matrices and Determinants » Algebra of Matrices
Question
If for a matrix where is the identity matrix, then A equals
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 6
» Matrices and Determinants » Solution of Simultaneous Linear Equations in Two or Three Variables
Question
The system of equation of equations in unknowns has a unique solution if
Choices
Choice (4)  Response  

a.  Det A≠0, AdjAB = 0 

b.  Det A = 0, AdjAB = 0 

c.  Det A = 0, AdjAB≠0 

d.  Det A≠0 

Question number: 7
» Matrices and Determinants » Adjoint and Evaluation of Inverse of Square Matrix
Question
The inverse of a symmetric matrix is –
Choices
Choice (4)  Response  

a.  Skew – symmetric 

b.  Symmetric 

c.  Diagonal matrix 

d.  Question does not provide sufficient data or is vague 

Question number: 8
» Matrices and Determinants » Properties and Operations of Determinants
Question
If each element of a determinant of order with value is multiplied by , then the new determinant is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  None of the above 
