Fill in the blanks
If A is a matrix of order 3 × 3, then |3A| = ___.
If A is a matrix of order 3 × 3, then |3A| = 27 |A|.
Explanation:
We know that if A = [aij]3×3, then |k.A| = k3|A|
∴ |3A| = 33 |A| = 27 |A|