5 EASY FACTS ABOUT SAUS BET DESCRIBED

A ⊆ B  if and only if  A ∪ B = B . displaystyle Asubseteq B text if and provided that Acup B=B. A established whose all elements are aspects of an inclusive set . Think about a established X this kind of that X comprises the names of the many rivers of a country. Yet another established Y features the names of rivers as part of your North Ind