Mathematics Matrices 1 Mark
Appeared in: 2024 (3 sets)
If $\begin{bmatrix} a & c & 0 \\ b & d & 0 \\ 0 & 0 & 5 \end{bmatrix}$ is a scalar matrix, then the value of $a + 2b + 3c + 4d$ is : (A) $0$ (B) $5$ (C) $10$ (D) $25$