MATH
'(<a href="http://www.j-archive.com/media/2006-02-08_J_21.jpg" target="_blank">Kelly of the Clue Crew shows a Venn diagram on a monitor.</a>)  An intersection contains elements common to two sets; this set, symbolized <a href="http://www.j-archive.com/media/2006-02-08_J_21a.jpg" target="_blank">here</a>, contains all the elements in either set'
the union