State which of the following sets are finite or infinite :
$\{ x:x \in N$ and $x$ is odd $\} $
State which of the following sets are finite or infinite :
$\{ x:x \in N$ and $x$ is prime $\} $
Which of the following sets are finite or infinite.
The set of months of a year
In each of the following, determine whether the statement is true or false. If it is true, prove it. If it is false, give an example.
If $A \not\subset B$ and $B \not\subset C,$ then $A \not\subset C$
If a set $A$ has $n$ elements, then the total number of subsets of $A$ is