Question

If $V=\{a,e,i,o,u\}$ and $B=\{a,i,k,u\}$, then find $V-B$ and $B-V$. Are they equal?

Answer 1

$V=\{a,e,i,o,u\}$ and $B=\{a,i,k,u\}$

$V-B=$ is a set which contain elements which are only present in $V$

$\therefore V-B=\{e,o\}$

$B-V=$ is a set which contain elements which are only present in $B$

$\therefore B-V=\left\{k\right\}$

Hence, $V-B\ne B-V$