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If A is a square matrix of order 3 and |A| = 5, then |π‘Žπ‘‘π‘—π΄| =

Class 12th Mathematics, Question - If A is a square matrix of order 3 and |A| = 5, then |π‘Žπ‘‘π‘—π΄| =

By
Komal Kohli
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These are the options for the question : If A is a square matrix of order 3 and |A| = 5, then |π‘Žπ‘‘π‘—π΄| =

(a) 5Β  Β  Β  Β  Β  (b) 25Β  Β  Β  Β  Β  (c) 125Β  Β  Β  Β  Β  (d) 1/5

The correct answer is -(b) |π‘Žπ‘‘π‘—π΄| = |𝐴|n-1 ⟹ |π‘Žπ‘‘π‘—π΄| = 25

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