If A and B are square matrices of order 3 such that |A| = -1, |B| = 3 then |3 AB| is equal to -

If A and B are square matrices of order 3 such that |A| = -1, |B| = 3

1.	If A and B are square matrices of order 3 such that \|A\| = -1, \|B\| = 3 then \|3 AB\| is equal to -
A.	-9
B.	-81
C.	-27
D.	81
Answer» C. -27

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If A and B are square matrices of order 3 such that |A| = -1, |B| = 3 then |3 AB| is equal to -

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