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The determinant of a 2-by-2 matrix is obtained by multiplying entries on the main diagonal and subtracting from it the product of entries laying on the………….
a) main diagonal                 
b) right diagonal
c) secondary diagonal       
d) all of these

c




b


a





A square matrix “A” is called a singular if
a) 0         
b) 1                         
c) 5         
d) 100

a



If the determinant of any square matrix is 0 then it is called……….matrix.
a) singular                           
b) non-singular
c) determinant                     
d) none of these


a