Taking the set of natural numbers as the universal set, write down the complements of the following sets:
$\{ x:x$ is an odd natural number $\} $
Let $\mathrm{U}$ be universal set of all the students of Class $\mathrm{XI}$ of a coeducational school and $\mathrm{A}$ be the set of all girls in Class $\mathrm{XI}$. Find $\mathrm{A}'.$
Let $A$ and $B$ be two sets then $(A \cup B)' \cup (A' \cap B)$ is equal to
Which of the following statement is false (where $A$ $\&$ $B$ are two non empty sets)
Fill in the blanks to make each of the following a true statement :
$\varnothing^ {\prime}\cap A$