Write the following intervals in set-builder form :
$\left( {6,12} \right]$
$\left( {6,12} \right] = \{ x:x \in R,6\, < \,x\, \le 12\} $
List all the subsets of the set $\{-1,0,1\}.$
State which of the following sets are finite or infinite :
$\{ x:x \in N$ and ${x^2} = 4\} $
Which of the following pairs of sets are equal ? Justify your answer.
$\mathrm{X} ,$ the set of letters in $“\mathrm{ALLOY}"$ and $\mathrm{B} ,$ the set of letters in $“\mathrm{LOYAL}”.$
Write down all the subsets of the following sets
$\{ a,b\} $
The smallest set $A$ such that $A \cup \{1, 2\} = \{1, 2, 3, 5, 9\}$ is
