CBSE 2026 · Region 1 · Set 1 · Q4 · 1 mark
If $\displaystyle \Delta_{1}=\left|\begin{array}{lll}1 & 0 & 0 \\ 0 & 2 & 0 \\ 0 & 0 & 3\end{array}\right|$ and $\displaystyle \Delta_{2}=\left|\begin{array}{lll}0 & 2 & 0 \\ 1 & 0 & 0 \\ 0 & 0 & 6\end{array}\right|$, then
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle \Delta_{2}=-2 \Delta_{1}$
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CBSE Class 12 Mathematics past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.