Consider the sets

$\phi, A=\{1,3\}, B=\{1,5,9\}, C=\{1,3,5,7,9\}$

Insert the symbol $\subset$ or $ \not\subset $ between each of the following pair of sets:

$A, \ldots B$

Which of the following is a true statement

List all the elements of the following sers :

$B = \{ x:x$ is an integer $; – \frac{1}{2} < n < \frac{9}{2}\} $

Write down all the subsets of the following sets

$\{ 1,2,3\} $

Write the following intervals in set-builder form :

$\left( { – 3,0} \right)$