Let $A=\{a, e, i, o, u\}$ and $B=\{a, i, u\} .$ Show that $A \cup B=A$
Write the following intervals in set-builder form :
$\left( { - 3,0} \right)$
The set $A = \{ x:x \in R,\,{x^2} = 16$ and $2x = 6\} $ equals
Examine whether the following statements are true or false :
$\{ a\} \in \{ a,b,c\} $
Which of the following are sets ? Justify your answer.
The collection of all the months of a year beginning with the letter $\mathrm{J}.$