Question 411003
<pre>
They are the same set.  Rearranging the elements in a different order 
between the braces does not change the set.  All of the following
represent exactly the same set:

{a, c, m, e}
{a, c, e, m}
{a, m, c, e}
{a, m, e, c}
{a, e, c, m}
{a, e, m, c}
{c, a, m, e}
{c, a, e, m}
{c, m, a, e}
{c, m, e, a}
{c, e, a, m}
{c, e, m, a}
{m, a, c, e}
{m, a, e, c}
{m, c, a, e}
{m, c, e, a}
{m, e, a, c}
{m, e, c, a}
{e, a, c, m}
{e, a, m, c}
{e, c, a, m}
{e, c, m, a}
{e, m, a, c}
{e, m, c, a}

Edwin</pre>