The order of a set is how the set is sorted.^{[2]} One example of an ordered set is the set of integers. One can always tell which of any two integers come first. For example, 1 always comes before 5.
The operators =, ≠, <, >, ≤, ≥ show the relative order of elements of an ordered set.
Sets other than numbers can be ordered. For example, the alphabet is an ordered set of letters. The statement 'a' < 'd' makes sense in terms of this ordering.
The points in a line are ordered. One can tell which points come before and after a particular point.
# | A | B | C | D |
E | F | G | H | I |
J | K | L | M | N |
O | P | Q | R | S |
T | U | V | W | X |
Y | Z |
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