AP EAPCET 20-Aug-2021 Shift 2 Paper

Let n=2 (say) and A=[

a	b
0	c

], Then adj‌A=[

c	−b
0	a

] which is a upper triangular matrix. Then, for any n×n matrix A, adj‌A is also upper triangular matrix.
Then, for any n×n matrix A,
adj‌A is also upper triangular matrix.