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 $\} $

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

$\{ 2,3,4\}  \ldots \{ 1,2,3,4,5\} $

Examine whether the following statements are true or false :

$\{ 1,2,3\}  \subset \{ 1,3,5\} $

Write down all the subsets of the following sets

$\{ a,b\} $

State which of the following sets are finite or infinite :

$\{ x:x \in N$ and $x$ is odd $\} $