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Zero matrix or Null matrix    



If each entry in a matrix is zero, then this is called…..matrix
a) square                               
b) null             
c) zero                                    
d)both b & c

d

[0  0  0] is …….matrix
a) null                                    
b) row          
c) rectangular                      
d) all of these

d

Which of the following is/are correct for null matrix?
a) a zero matrix is not necessarily a square matrix.
b) a null matrix is generally denoted by O.
c) both a and b                    
d) none of these

c

Diagonal matrix                       :


A square matrix in which all elements are zero except the diagonal elements is known as……
a) null matrix                       
b) corner matrix
c) diagonal matrix                            
d) all of these

c