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Mathematics · 2026 · 1 mark
CBSE 2026 · Region 3 · Set 3 · Q10
If A ( adj A )= [3, 0, 0; 0, 3, 0; 0, 0, 3], then the value of |2 A | is:
If $\displaystyle \mathrm{A}(\operatorname{adj} \mathrm{A})=\left[\begin{array}{lll}3 & 0 & 0 \\ 0 & 3 & 0 \\ 0 & 0 & 3\end{array}\right]$, then the value of $\displaystyle |2 \mathrm{~A}|$ is :
Official answer
(D)
$\displaystyle 24$
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CBSE Class 12 Mathematics past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.