Which set is the subset of all given sets
State which of the following sets are finite or infinite :
$\{ x:x \in N$ and $2x - 1 = 0\} $
Which of the following sets are finite or infinite.
$\{1,2,3, \ldots 99,100\}$
Let $S=\{1,2,3, \ldots, 40)$ and let $A$ be a subset of $S$ such that no two elements in $A$ have their sum divisible by 5 . What is the maximum number of elements possible in $A$ ?
State whether each of the following set is finite or infinite :
The set of circles passing through the origin $(0,0)$