1. If and then det (*AB*) = _______.

**Ans:** −60

2. The cofactor of ‘−2’ in is _______.

**Ans:** −12

3. The minor of *a*_{32} element in matrix *A* in Question 2 is _______.

**Ans:** −6

4. For matrix *A* in Question 2 det *A* = _______.

**Ans:** – 8

5. (Adj *I*) = _______.

**Ans:** *I*

6. If *A* is an *n*th order square matrix, then Adj (*kA*) is _______.

**Ans:** *k*^{n}^{−1}(Adj *A*)

7. If the system *AX* = *B* is consistent then for ...

Start Free Trial

No credit card required