If A is a skew-symmetric matrix of order n × n and $a_{ij}$ is the $(i, j)^{th}$ elements, then :
Answer & explanation
Correct answer: option 2
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 $i=j$, $a_{ij}=0$