Question:medium

If $A = \begin{bmatrix} 0 & 5 & 3 \\ -1 & 2 & c \\ 1 & a & b \end{bmatrix}$ is a symmetric matrix, then the value of $3a + b + c$ is:

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For any symmetric matrix, elements mirror perfectly across the main diagonal. Mirroring elements gives the values of the variables instantly!
Updated On: Jul 4, 2026
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The Correct Option is C

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