The most familiar example is the completeness of the real numbers.

The most familiar example of a non-contact force is weight.

Take the familiar mathematical example of the greatest cardinal number.

Another example familiar to some cat and dog owners is the ability of their animals to open doors.

Another familiar example might be the compact 2-torus or Euclidean space under addition.

One familiar example is the "50% off" label that looks like a bargain until you think it was probably never worth the "full" price.

The most familiar example of a paired difference test occurs when subjects are measured before and after a treatment.

A familiar example is potential energy due to gravity.

The species name has two words:Tyrannosaurus rex is a familiar example.

In this section we introduce the concept of a relation with a familiar everyday example.