Question

1 point
If A is 3 x 3 matrix, I Al is not
zero and |3 A|= KIAI, the
value of Kis *
(a)3
(b)9
(c)27
(d)none of these​

Answer 1

Determinants

|kA| = k^n |A|

Here , n = 3

|3A| = 3^3 |A|

|3A| = 27 |A|

So, k = 27

Option (c)27 is correct .