State which of the following sets are finite or infinite :
$\{ x:x \in N$ and $2x - 1 = 0\} $
Let $A, B$ and $C$ be three sets. If $A \in B$ and $B \subset C$, is it true that $A$ $\subset$ $C$ ?. If not, give an example.
List all the elements of the following sers :
$F = \{ x:x$ is a consonant in the Englishalphabet which precedes $k\} $
Write the following sets in the set-builder form :
$\{ 3,6,9,12\}$
Write the following sets in roster form :
$A = \{ x:x$ is an integer and $ - 3 < x < 7\} $