State which of the following sets are finite or infinite :

$\{ x:x \in N$ and $2x - 1 = 0\} $

Write the following as intervals :

$\{ x:x \in R, - 12\, < \,x\, < \, - 10\} $

Write the following intervals in set-builder form :

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

Which of the following are sets ? Justify your answer.

The collection of all even integers.

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

$\{a, b, c\} \ldots\{b, c, d\}$

In the following state whether $A=B$ or not :

$A=\{a, b, c, d\} ; B=\{d, c, b, a\}$