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Mathematics · 2026 · 1 mark
CBSE 2026 · Region 4 · Set 1 · Q2
If A =[ a_ij ] is a 2 × 2 matrix whose elements are given by a_ij =(| i -3 j |)/2, then A' is:
If $\displaystyle \mathrm{A}=\left[\mathrm{a}_{\mathrm{ij}}\right]$ is a $\displaystyle 2 \times 2$ matrix whose elements are given by $\displaystyle \mathrm{a}_{\mathrm{ij}}=\frac{|\mathrm{i}-3 \mathrm{j}|}{2}$, then A' is :
Official answer
(B)
$\displaystyle \left[\begin{array}{ll}1 & \frac{1}{2} \\ \frac{5}{2} & 2\end{array}\right]$
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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.