Taking the set of natural numbers as the universal set, write down the complements of the following sets:
$\{x: 2 x+5=9\}$
Let $U=\{1,2,3,4,5,6,7,8,9\}, A=\{1,2,3,4\}, B=\{2,4,6,8\}$ and $C=\{3,4,5,6\} .$ Find
$B^{\prime}$
If $A$ and $B$ be any two sets, then $(A \cap B)'$ is equal to
Let $U = \{ 1,\,2,\,3,\,4,\,5,\,6,\,7,\,8,\,9,\,10\} $, $A = \{ 1,\,2,\,5\} ,\,B = \{ 6,\,7\} $, then $A \cap B'$ is
Taking the set of natural numbers as the universal set, write down the complements of the following sets:
$\{x: x+5=8\}$