Consider the matrix

MATHEMATICS · Subjective · CBSE · Mathematics · Determinants · Determinants

Problem

Consider the matrix

A=\begin{pmatrix}1 & 2 & 3\\ 1 & 2 & 3\\ 4 & 5 & 6\end{pmatrix}

. Without expanding its determinant, justify whether

A

is singular or non-singular.