Question
Mathematics Question on Adjoint and Inverse of a Matrix
If, A is a square matrix of order 3 and |A| = -2 then. ∣−2 A−1∣ is:
A
-4
B
4
C
8
D
2
Answer
4
Explanation
Solution
The correct option is (B): 4
If, A is a square matrix of order 3 and |A| = -2 then. ∣−2 A−1∣ is:
-4
4
8
2
4
The correct option is (B): 4