Teaching NVS PGT 2024 Test Series Mathematics Matrices Adjoint and Inverse of a Square Matrix

Let A = \(\begin{vmatrix}1&-1&1\\\ 2&1&-3\\\ 1&1&1 \end{vmatrix}\) and B = \(\frac{1}{10} \begin{vmatrix}4&2&2&\\\ -5&0&α \\\ 1&-2& 3\end{vmatrix}\). If B is the inverse of A, then α is:

1
-2
2
-1
3
2
4
5
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