Which of the following sets are finite or infinite.
$\{1,2,3, \ldots 99,100\}$
$\{1,2,3 \ldots 99,100\}$ is a finite set because the numbers from $1$ to $100$ are finite in number.
Which of the following are sets ? Justify your answer.
The collection of all boys in your class.
What universal set $(s)$ would you propose for each of the following :
The set of right triangles
State whether each of the following set is finite or infinite :
The set of numbers which are multiple of $5$
Write the following sets in roster form :
$D = \{ x:x$ is a prime number which is divisor of $60\} $
State which of the following sets are finite or infinite :
$\{ x:x \in N$ and $x$ is odd $\} $
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