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CUET
-- Mathematics - Section B1
Determinants
If A is a matrix of order 2 and |A| = 6 , then the value of \(|3 { A }^{ T } |\) is
54
18
-18
-54
$|3A^T|=3^2|A^T|$
$⇒3^2|A|$
$=3^2×6$
$=9×6=54$