State whether each of the following set is finite or infinite :

The set of letters in the English alphabet

Given the sets $A=\{1,3,5\}, B=\{2,4,6\}$ and $C=\{0,2,4,6,8\},$ which of the following may be considered as universal set $(s)$ for all the three sets $A$, $B$ and $C$

$\{ 1,2,3,4,5,6,7,8\} $

Write the following sets in the set-builder form :

${\rm{\{ 2,4,8,16,32\} }}$

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

$\{ x:x$ is an equilateral triangle in a plane $\}  \ldots \{ x:x$ is a triangle in the same plane $\} $

Write the following intervals in set-builder form :

$\left( {6,12} \right]$