Write down all the subsets of the following sets

$\emptyset $

Let $A=\{a, e, i, o, u\}$ and $B=\{a, i, u\} .$ Show that $A \cup B=A$

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:

$A, \ldots B$

Write the following intervals in set-builder form :

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

Which of the following is a true statement

List all the elements of the following sers :

$A = \{ x:x$ is an odd natural number $\} $