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Sep 18, 2022
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Find the cofactor of 1 in the matrix $A = \begin{bmatrix}1 & 3 \\2 & 4 \end{bmatrix}$
Difficulty: Easy
A:
$1$
B:
$-1$
C:
$4$
D:
$-4$
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ID: 63273dbaca83163ac3a11e5f