If A and B are square matrix of order 3 such that |A|= -1 and |B|= 3, then find the values of |3AB|

Dear student, 

|3AB| = 33 |AB| = 27×|A|×|B| We know, |A| = -1 and |B| = 3So, |3AB| = 27×|A|×|B| = 27×-1×3 = -81

Regards 

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