If $U = \{a, b, c, d, e, f, g, h\}$,find the complement of the set $D = \{f, g, h, a\}$.

If $A$ and $B$ are two sets,then $(A \cap B)'$ is equal to

Taking the set of natural numbers as the universal set,write down the complement of the following set: $\{x: x+5=8\}$

Let $U$ be the universal set of all the students of Class $XI$ of a coeducational school and $A$ be the set of all girls in Class $XI$. Find $A'$.

Consider the experiment of rolling a die. Let $A$ be the event 'getting a prime number' and $B$ be the event 'getting an odd number'. Write the set representing the event 'not $A$'.

The number of subsets of $\{1, 2, 3, \ldots, 9\}$ containing at least one odd number is