Q.If $A = \begin{pmatrix} a & b \ c & d \end{pmatrix}$ and $ad - bc = 0$ , then $A^2$ is

zero matrix

scalar matrix

singular matrix

none

The correct solution involves applying the fundamental concept to derive the final value step by step...

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Q.If A=(ab cd)A = \begin{pmatrix} a & b \ c & d \end{pmatrix}A=(a​b c​d​) and ad−bc=0ad - bc = 0ad−bc=0, then A2A^2A2 is