in Linear Algebra recategorized by
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Let $A=[a_{ij}], \: 1 \leq i, j \leq n$ with $n \geq 3$ and $a_{ij}=i \cdot j$. The rank of $A$ is:

  1. $0$
  2. $1$
  3. $n-1$
  4. $n$
in Linear Algebra recategorized by
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