### Finite and Infinite Sets

A finite set is one in which it is possible to list and count all the members of the set.

Example

D = {days of the week}

= {Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday}

And, n(D) = 7

An **infinite** set is one in which it is not possible to list and count all the members of the set.

Example

E = {even numbers greater than 9}

= {10, 12, 14, …}

And, n(E) = infinite