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Mathematics · 2025 · 1 mark
CBSE 2025 · Region 6 · Set 1 · Q1
Let both AB^′ and B^′ A be defined for matrices A and B. If order of A is n × m, then the order of B is:
Let both $\displaystyle \mathrm{AB}^{\prime}$ and $\displaystyle \mathrm{B}^{\prime} \mathrm{A}$ be defined for matrices A and B . If order of A is $\displaystyle \mathrm{n} \times \mathrm{m}$, then the order of B is :
Official answer
(B)
$\displaystyle \mathrm{n} \times \mathrm{m}$
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CBSE Class 12 Mathematics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.