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\} $
Write down all the subsets of the following sets
$\{ a\} $
State which of the following sets are finite or infinite :
$\{ x:x \in N$ and ${x^2} = 4\} $
Which of the following are sets ? Justify your answer.
The collection of questions in this chapter.
Write the following as intervals :
$\{ x:x \in R, - 12\, < \,x\, < \, - 10\} $