CBSE 2024 · Region 5 · Set 3 · Q2 · 1 mark
For the matrix $\displaystyle \mathrm{A}=\left[\begin{array}{ccc}2 & -1 & 1 \\ \lambda & 2 & 0 \\ 1 & -2 & 3\end{array}\right]$ to be invertible, the value of $\displaystyle \lambda$ is :
Official answer
From CBSE’s own marking scheme for this paper.
(D)
$\displaystyle \mathbb{R}-\{-10\}$
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CBSE Class 12 Mathematics past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.