LESSON 4 - FINITE AND INFINITE SETS

A finite set contains a countable number of elements while for an infinite set the number of elements is uncountable. For example, the set LaTeX: A={even numbers less than 11} is a finite set since there are 5 even numbers less than 11. This can be written as LaTeX: n(A)=5. The set LaTeX: B={Even numbers} is an infinite set since there are infinitely many even numbers. Written symbolically as LaTeX: n(B)=\infty.