Given,
The set is M={a,b,c}
The cardinity of the set is the number of elements in the set.
So, the cardinity of the set M is n(M)=3.
The subsets of the set M is,
[tex]\mleft\{a\mright\},\mleft\{b\mright\},\mleft\{c\mright\},\mleft\{a,b\mright\},\mleft\{b,c\mright\},\mleft\{a,c\mright\},\mleft\{a,b,c\mright\},\varnothing[/tex]Hence, there are 8 subsets of the set M and cardinity is 4 of the set M.
