Let $S=\{1,2,3,4\}$. The total number of unordered pairs of disjoint subsets of $S$ is equal to

Write the following as intervals :

$\{ x:x \in R,3\, \le \,x\, \le \,4\} $

Which of the following are examples of the null set

Set of odd natural numbers divisible by $2$

Write the following intervals in set-builder form :

$\left( { - 3,0} \right)$

Make correct statements by filling in the symbols $\subset$ or $ \not\subset $ in the blank spaces:

$\{ 2,3,4\}  \ldots \{ 1,2,3,4,5\} $

Let $A=\{1,2,3,4,5,6\} .$ Insert the appropriate symbol $\in$ or $\notin$ in the blank spaces:

$ 5\, .......\, A$