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Applied Mathematics · 2025 · 1 mark
CBSE 2025 · Central · Set 4 · Q4
The inverse of matrix A = [4, -1; 2, 1] is
The inverse of matrix $\displaystyle \mathrm{A}=\left[\begin{array}{cc}4 & -1 \\ 2 & 1\end{array}\right]$ is
Official answer
(C)
$\displaystyle \left[\begin{array}{cc}1 / 6 & 1 / 6 \\ -1 / 3 & 2 / 3\end{array}\right]$
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CBSE Class 12 Applied Mathematics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.