Set Theory Revision 2
2.1
Given the following set:
๐ = {๐, ๐, ๐ข, ๐จ, ๐ฎ}.
State whether the following statements are true or false:
Statement
True
False
{๐, ๐, ๐, ๐, ๐}โ ๐จ
{๐, ๐, ๐, ๐, ๐}โ ๐จ
{} โ ๐จ
{} โ ๐จ
2.2
Given set
๐ช = {๐ณ๐๐๐, ๐ป๐๐๐๐, ๐ณ๐๐๐๐๐๐
}. Answer the following question
about the subsets of C.
Question
Answer
2.2.1
How many subsets of set C have zero
elements (Empty subsets of set C)?
(1)
2.2.2
How many subsets of set C have one
element (Singleton subsets of set C)?
(1)
2.2.3
How many subsets of set C have two
elements?
(1)
2.2.4
How many subsets of set C have three
elements?
(1)
(4)
2.3
Given set ๐ด = {2,3,4}. Answer the following question about the subsets
of set A.
Question
Answer
2.3.1
How many subsets of set C have zero
elements (Empty subsets of set A)?
(1)
2.3.2
How many subsets of set C have one
element (Singleton subsets of set A)?
(1)
2.3.3
How many subsets of set A have two
elements?
(1)
2.3.4
How many subsets of set A have three
elements?
(1)
(4)
