(A) 
(B) 
(C) 
(D) 
SOLUTION:
Given: Matrix A = 
exists and unique solution is 
……….(i)
Now 
and 
and 
adj. A = 
= 
And 
= 
= 
= 
Therefore, option (A) is correct.
Choose the correct answer If x,y,z are non-zero real numbers, then the inverse of matrix A =(fig1) is
Choose the correct answer If x,y,z are non-zero real numbers, then the inverse of matrix A =(fig1) is