CBSE 2023 · Region 5 · Set 1 · Q5 · 1 mark
If $\displaystyle \left|\begin{array}{ccc}\alpha & 3 & 4 \\ 1 & 2 & 1 \\ 1 & 4 & 1\end{array}\right|=0$, then the value of $\displaystyle \alpha$ is
Official answer
From CBSE’s own marking scheme for this paper.
(D)
$\displaystyle 4$
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CBSE Class 12 Mathematics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.