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Let $A$ be a square matrix of size $n \times n (n>1)$. The elements of $A=\{a_{ij}\}$ are given by $$a_{ij} = \begin{cases} i \times j, & \text{if } i \geq j \\ 0, & \text{if } i < j \end{cases}$$ The determinant of $A$ is

  1. $0$
  2. $1$
  3. $n!$
  4. $(n!)^2$
in Linear Algebra recategorized by
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