CBSE 2025 · Region 5 · Set 1 · Q4 · 1 mark
If $\displaystyle \left|\begin{array}{rr}2 \mathrm{x} & 5 \\ 12 & \mathrm{x}\end{array}\right|=\left|\begin{array}{rr}6 & -5 \\ 4 & 3\end{array}\right|$, then the value of x is :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle \pm 7$
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CBSE Class 12 Mathematics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.