CUET Preparation Today
CUET
-- Mathematics - Section A
Matrices
If A and B are the square matrices of order 3 such that |A| = – 1, |B| = 3. Then what is the value of |2AB|
24
-24
6
-6
The correct answer is Option (2) → -24
$|2AB|=2^3|A||B|$
$=-8×1×3$
$=-24$
