List all the elements of the following sers :
$B = \{ x:x$ is an integer $; - \frac{1}{2} < n < \frac{9}{2}\} $
Which of the following are examples of the null set
$\{ y:y$ is a point common to any two parallellines $\} $
Make correct statements by filling in the symbols $\subset$ or $ \not\subset $ in the blank spaces:
$\{ x:x$ is an even natural mumber $\} \ldots \{ x:x$ is an integer $\} $
State whether each of the following set is finite or infinite :
The set of animals living on the earth
Which of the following are sets ? Justify your answer.
The collection of all even integers.