### Unscramble the following definitions about number systems.

The set of *integers*, denoted by
$\m Z$ is the set
$\{...-2, -1, 0, 1, 2, ...\}$
The set of *rational numbers*, denoted by
$\m Q$ is the set
$\{\frac{m}{n}\ |\ m,n\in \m Z \text{and} n\ne 0\}$ $=$ the set of
all numbers with finite or (eventually) repeating decimal expansions.

The set of *real numbers*, denoted by
$\m R$ is the set
$(-\infty,\infty)=$ the real line $=$ the set of all numbers
with finite or infinite decimal expansions.

The set of *irrational numbers* is the set
$\{x\in \m R\ |\ x\notin \m Q\}$ $=$ the set of all numbers with
non-repeating decimal expansions.