Different Types of Numbers

My math teacher was hungry but all she had was a piece of pi

Numbers to solve problems?

We use numbers to solve problems. A simple problem such as "If Ellen has 3 walls on which to watch the paint dry, and she watches 1 of them, how many walls are left to watch?" has a simple answer. As problems get more interesting, as surely they must, so do the numbers we need in order to solve them.

Real Numbers

All numbers that can be expressed as the limit of a sequence of rational numbers. Every real number corresponds to a point on the number line.

Here are some examples of Numbers