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Matrices — MATHS STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceMATHSMatrices1 Mark
Question
If $\left[\begin{array}{lll}3 & -2 & 0\end{array}\right]\left[\begin{array}{c}2 \\ k \\ -5\end{array}\right]=0$, then value of $k$ is _________
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