If A is a skew-symmetric matrix of order n × n and $a_{ij}$ is the $(i, j)^{th}$ elements, then :

$a_{ij}=\frac{1}{a_{ij}}$ for all values of i and j $a_{ij}=0 $ when $i=j $ $a_{ij}≠ 0 $ for all values of i and j $a_{ij}≠0$ when $i=j $ only

$a_{ij}=0 $ when $i=j $

The correct answer is Option (2) → $a_{ij}=0 $ when $i=j $ In skew-symmetric matrix $a_{ij}=-a_{ji}⇒a_{ij}+a_{ji}=0$ for $i=j$, $a_{ij}=0$