CBSE 2026 · Region 2 · Set 1 · Q5 · 1 mark
For a square matrix A, $\displaystyle (3 \mathrm{~A})^{-1}=$
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle \frac{1}{3} \mathrm{~A}^{-1}$
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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.