## LESSON 6 - SUBSET OR NON SUBSET

If all of the members of set are all contained in the set , then is a subset of , written as . It is important to note that

• the empty set, or , is a subset of every set,
• the set itself is a subset of the set,
• these are subsets in every set, where n represents the number of elements in the set.

EXAMPLE
Given that , and we can state that
since all of the elements in and contained in
since the element in is not a member of
There are subsets in . These subsets are
, , , , , ,