If A= [ ll 4 & 5 2 & 5 ], then |(2 A)^ -1 |= - Vidyadip

MCQ

If $A=\left[\begin{array}{ll}4 & 5 \\ 2 & 5\end{array}\right]$, then $\left|(2 A)^{-1}\right|=$

A
$\frac{1}{30}$
B
$\frac{1}{20}$
C
$\frac{1}{60}$
✓
$\frac{1}{40}$

✓

Answer

Correct option: D.

$\frac{1}{40}$

$\frac{1}{40}$

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