If A is a matrix of order 3

Question:

If $A$ is a matrix of order 3 and $|A|=8$, then $|\operatorname{adj} A|=$

(a) 1

(b) 2

(c) $2^{3}$

(d) $2^{6}$

Solution:

(d) $2^{6}$

$|a d j A|=|A|^{n-1}$

$=8^{2}$

$=2^{6}$

Leave a comment

Close

Click here to get exam-ready with eSaral

For making your preparation journey smoother of JEE, NEET and Class 8 to 10, grab our app now.

Download Now