Please solve RD Sharma class 12 chapter 5 Determinants exercise multiple choise question 37 maths textbook solution
Correct option (d)
We use |kA| = kn|A|, where n is order of A.
|A| = 8 and A is 3x3 matrix.
We have to find |3A|.
Here |A| = 8
We know that
|kA| = kn|A|, where n is order of A.
|3A| = 33 |A|
=27x8 = 216 [Since A is 3x3 matrix]
Hence |3A| = 216