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Mathematics · 2024 · 1 mark
CBSE 2024 · Region 3 · Set 1 · Q13
If |1, 3, 1; k, 0, 1; 0, 0, 1| = ± 6, then the value of k is:
If $\displaystyle \left|\begin{array}{ccc}1 & 3 & 1 \\ \mathrm{k} & 0 & 1 \\ 0 & 0 & 1\end{array}\right|= \pm 6$, then the value of k is :
Official answer
(D)
$\displaystyle \mp 2$
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CBSE Class 12 Mathematics past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.